网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
A tank has been sealed and unventilated(不通风的) for a long period of time. Which of the following conditions does this indicate?
A.The tank is safe to enter
B.The tank is especially dangerous to enter
C.Carbon monoxide(一氧化物) is present
D.Water vapor present when the tank was sealed has oxidized(使氧化)
参考答案
更多 “ A tank has been sealed and unventilated(不通风的) for a long period of time. Which of the following conditions does this indicate?A.The tank is safe to enterB.The tank is especially dangerous to enterC.Carbon monoxide(一氧化物) is presentD.Water vapor present when the tank was sealed has oxidized(使氧化) ” 相关考题
考题
Don't worry, your watch () and you can have it in no time.
A、is repairedB、has been repairedC、is being repaired
考题
We can obviously notice that over a period of no practice what has been learned tends to be forgotten from______.
考题
-Hello, David! I haven’t heard from you for a long time. How have you been recently -()
A、Not bad, thank you.B、That’s ok.C、Long time no see.
考题
—I saw Dave in lift this morning.— Really? He ______ around here for a long time.
A won’t be seenB wasn’t seeC hasn’t been seenD hadn’t been seen
考题
Hello, David! I haven't heard from you for a long time. How have you been recently?()A. That's okB. Long time no seeC. Not bad, thank you
考题
Nobody but Jack and Jane () made great progress in the history examination this time.
A、haveB、hasC、hadD、has been
考题
Our modern civilization must not be thought of as ________ in a short period of time.[A] being created[B] to have been created[C] having been created[D] to be created
考题
A ship crane which has been idle for a period of over six months shall be inspected to the same standards as a ______.A.yearly inspectionB.quarterly inspectionC.monthly inspectionD.weekly inspection
考题
Which statement about entry into a space that has been sealed for a long time is TRUE ________.A.A tank that has been used to carry hazardous liquids should be tested for oxygen content,toxicity,and explosive gasesB.You can safely enter the space without a breathing apparatus if the oxygen content exceeds 14%C.The natural ventilation through the installed vents is sufficient to provide the proper oxygen contentD.The heat of the sun on upper ballast tanks,such as in a bulk carrier,may generate carbon monoxide
考题
Which statement about entering into a tank which has been sealed for a long time is TRUE ________.A.The tank should be tested only once to ensure the oxygen content is at least 14% before entryB.The tank must be tested at frequent intervals to ensure that hazardous gasses have not regeneratedC.The tank need not be tested for oxygen content if it is ventilated for more than 24 hoursD.If the oxygen content tests at less than 12% you should wear an approved gas mask
考题
A:Hello, David! I haven't heard from you for a long time. How have you been recently? B:()A、That's okB、Long time no seeC、Not bad, thank you
考题
Initially, for the Automatic Workload Repository (AWR) statistics,the retention period is set to 7 days, the collection interval is set to 30 minutes and the collection level is set to Typical in your production database. You have been using the Memory Advisor for the last three months to generate recommendations for tuning memory components. However,when you observe the Memory Advisor on a Friday,you find that the statistics are available only for two days, Thursday and Friday,of that week. What would have caused the statistics to be removed?()A、On Wednesday, the statistics have been purged.B、On Wednesday, the retention period has been set to zero.C、On Wednesday, the collection interval has been set to zero.D、On Wednesday, the collection level has been changed to All.E、On Wednesday, the retention period has been set to one day.F、On Wednesday, the retention period has been set to two daysG、On Wednesday, the collection level has been changed to Typical.H、On Wednesday, the collection interval has been set to 1440 minutes.
考题
单选题Purging air from a hydraulic system is necessary when()A
adding small amounts of oil to the systemB
the system has been overheatedC
the system has been drained and then filled with new oilD
the system has been idle for a long period of time
考题
单选题If there has been a fire in a closed unventilated compartment it may be unsafe to enter because of ().A
unburned carbon particlesB
excess nitrogenC
a lack of oxygenD
excess hydrogen
考题
单选题After being launched from a vessel,totally enclosed survival craft which have been afloat over a long period require().A
frequent opening of hatches to permit entry of fresh airB
regular checks of bilge levelsC
use of ear plugs to dampen engine noiseD
frequent flushing of the water spray system with fresh water
考题
单选题Malware has been detected and removed on a customer computer several times in a short periodof time. Which of the following will BEST help prevent future occurrences?()A
Defragment the hard driveB
Discuss safe web-browsing habits with the customerC
Delete temporary files, cookies and browser historyD
Install anti-virus software which uses manual updates
考题
单选题View the Exhibit to examine the metrics with a threshold.Which statement is true regarding the Number of Transactions (per second) metric?()A
Oracle uses statistical relevance to determine when an adaptive threshold has been breached for the metric.B
The statistics for the metric values observed over the baseline time period are not examined to determine threshold values.C
Oracle determines when an adaptive threshold has been breached based on the maximum value captured by the baseline.D
The total concurrent number of threshold violations, which must occur before an alert is raised for the metric, has been set to zero.
考题
单选题A tank which has been sealed for a long period of time can be dangerous because ().A
steel surfaces consume oxygen by rustingB
sealed tanks usually form a vacuumC
moisture condenses in the tank, displacing the oxygenD
most tank coatings give off poisonous vapors in the presence of moisture
考题
单选题A ship crane which has been idle for a period of over six months shall be inspected to the same standards as a().A
yearly inspectionB
quarterly inspectionC
monthly inspectionD
weekly inspection
考题
单选题我们的重吊杆已经长时间不用了。()A
Our derrick has been out of use for a long time.B
Our heavy derrick has been out of use for a long time.C
Our crane has been out of use for a long time.D
Our winch has been out of use for a long time.
考题
单选题A tank has been sealed and unventilated for a long period of timeWhich of the following conditions does this indicate?()A
The tank is safe to enterB
The tank is especially dangerous to enterC
Carbon monoxide is presentD
Water vapor present when the tank was sealed has oxidized
考题
单选题Following a grounding, you can best determine that a SLACK fuel oil tank has been holed by ().A
sounding the tankB
waiting for the vessel to listC
examining tank boundariesD
checking fuel oil strainers
考题
单选题You are on a containership carrying a tank container that had been filled with sodium hydroxide solution. The container is empty but has not been cleaned. Which,if any,placard is required?().A
No placard is required; the tank openings must be sealedB
Empty placard with corrosive placardC
Residue label with the UN numberD
Black and white corrosive placard
考题
单选题The Hallside site has been ______.A
turned into a steelworks from a woodland and an energy park.B
in use as an energy park .C
disused for a long period of time .D
out of use for a short period of time .
考题
单选题Initially, for the Automatic Workload Repository (AWR) statistics,the retention period is set to 7 days, the collection interval is set to 30 minutes and the collection level is set to Typical in your production database. You have been using the Memory Advisor for the last three months to generate recommendations for tuning memory components. However,when you observe the Memory Advisor on a Friday,you find that the statistics are available only for two days, Thursday and Friday,of that week. What would have caused the statistics to be removed?()A
On Wednesday, the statistics have been purged.B
On Wednesday, the retention period has been set to zero.C
On Wednesday, the collection interval has been set to zero.D
On Wednesday, the collection level has been changed to All.E
On Wednesday, the retention period has been set to one day.F
On Wednesday, the retention period has been set to two daysG
On Wednesday, the collection level has been changed to Typical.H
On Wednesday, the collection interval has been set to 1440 minutes.
热门标签
最新试卷
![瑞牛题库 章节练习 历年真题 模拟试卷](http://assets.51tk.com/51_sidebar_right_index.jpg)