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）
What is the purpose of the limit switch on gravity davits?
A.To cut off the power when the davits hit the track safety stops
B.To stop the davits from going too fast
C.To cut off the power when the davits are about 12 inches or more from the track safety stops
D.None of the above
参考答案
更多 “ What is the purpose of the limit switch on gravity davits?A.To cut off the power when the davits hit the track safety stopsB.To stop the davits from going too fastC.To cut off the power when the davits are about 12 inches or more from the track safety stopsD.None of the above ” 相关考题
考题
A typical purpose of placement tests is____ .
A.to find out problemsB.to decide what to teach.C.to assign students to different-level classesD.to decide how to teach next
考题
The correct method of switching off a marine radar is to turn power switch to ____ position fisrt, then to ______ position.A.off / standbyB.standby / offC.standby / closeD.close / standby
考题
When the transmissions of a radio station or a Decca chain, etc., have broken down, switch off or suspended, it is ______.A.UnfunctionalB.Break downC.Off powerD.Off air
考题
The citizens had no food supply when all the ( ) to this city had been cut off.
A.approachesB.routesC.itinerariesD.leads
考题
The network administrator has configured port security on a Ezonexam switch. Why would a network administrator configure port security on this Ezonexam device?A．To prevent unauthorized hosts from getting access to the LANB．To limit the number of Layer 2 broadcasts on a particular switch portC．To prevent unauthorized Telnet or SSH access to a switch portD．To prevent the IP and MAC address of the switch and associated portsE．None of the above
考题
You need to perform. some initial configuration tasks on a new Ezonexam switch. What is the purpose of assigning an IP address to a switch?A．To provide local hosts with a default gateway addressB．To allow remote management of the switch.C．To allow the switch to respond to ARP requests between two hostsD．To ensure that hosts on the same LAN can communicate with each other.E．None of the above
考题
You need to configure the power settings of your portable computer so that the display turns off when it is inactive and running on battery power. You also need to ensure that the power settings of the hard disk remain unaffected.What should you do?（）A.AB.BC.CD.D
考题
Why would a network administrator configure port security on a switch()。
A.to prevent unauthorized Telnet access to a switch portB.to limit the number of Layer 2 broadcasts on a particular switch portC.to prevent unauthorized hosts from accessing the LAND.to protect the IP and MAC address of the switch and associated portsE.to block unauthorized access to the switch management interfaces over common TCP ports
考题
A cisco aironet 1020 controller-based access point has been connected to a catalyst 3550-24 pwr switch. however， when it is powered up， the access point fails. What has caused this problem？（）A、access point does not support 802.11hB、incorrect switch power supplyC、switch port is not enabledD、switch does not support 802.3afE、access point has not been initialized with the primary controller
考题
A Cisco Aironet 1020 controller-based access point has been connected to a Catalyst 3550-24PWR Switch. However， when it is powered up， the access point fails. What has caused this problem？（）A、access point does not support 802.11hB、incorrect switch power supplyC、switch port is not enabledD、switch does not support 802.3afE、access point has not been initialized with the primary controller
考题
You need to configure the power settings of your portable computer so that the display turns off when it is inactive and running on battery power. You also need to ensure that the power settings of the hard disk remain unaffected. What should you do？（）A、Change the advanced power settings of the Balanced power plan.B、Configure the portable computer to use the Power saver power plan.C、Configure the portable computer to use the High performance power plan.D、Restore the Power Saver power plan to the default settings.
考题
You have a laptop that doesn’t shut down at all. It stays on the shutdown screen and even if you try to switch it off， it won’t switch off？ （）A、 Enable APM in control panel， power optionsB、 Disable APM in the BIOSC、 Enable hibernate in control panel， power optionsD、 Enable standby in control panel， power option
考题
单选题According to the regulations，what fire safety control feature is required in quick-closing shut off valves?（）A
Electrical cut off switchB
A fusible linkC
Manual cut off switchD
A water spray actuator
考题
单选题You have a laptop that doesn’t shut down at all. It stays on the shutdown screen and even if you try to switch it off， it won’t switch off？ （）A
Enable APM in control panel， power optionsB
Disable APM in the BIOSC
Enable hibernate in control panel， power optionsD
Enable standby in control panel， power option
考题
单选题When hoisting a boat on gravity type davits using an electric motor driven winch，the davit arms should be brought up（）.A
to their final position with the winch operating at slow speedB
to the bar stop，and then hand cranked to their final positionC
until just before they make contact with the limit switch，and then hand cranked to their final positionD
to the embarkation deck，and then hand cranked to their final position
考题
单选题After resolving the trouble of main power supply, main switch of emergency generator should（）, if power supply is refreshed.A
be switched off by the duty officerB
be switched on by the duty officerC
be switched off automaticallyD
be switched on automatically
考题
单选题Limit switches on gravity davits should be tested by（）.A
the engineers，from a panel in the engine roomB
shutting off the current to the winchC
pushing the switch lever arm while the winch is runningD
All of the above
考题
单选题On open lifeboats，the purpose of the wire stretched between the davit heads is to（）.A
keep the movement of the davits at the same speedB
keep the davits from slipping when they are in the stowed positionC
prevent vibration during lowering of the boatD
support the manropes
考题
单选题Limit switches（）.A
control the descent rate of a lifeboatB
control the ascent rate of a lifeboatC
cut off power to the winch when the lifeboat nears the final stowed positionD
cut off power to the winch when the lifeboat reaches the davit bumpers
考题
单选题What is the purpose of the limit switch on gravity davits?（）A
To cut off the power when the davits hit the track safety stopsB
To stop the davits from going too fastC
To cut off the power when the davits are about 12 inches or more from the track safety stopsD
None of the above
考题
单选题What is the purpose of Dual Ring Interconnect with D C for SDH rings？（）A
Protects signals when a ring switch failsB
Protects signals when multiple span switches failC
Protects pre-emptible traffic from being dropped when a ring switch occursD
Protects signals against any combination of link failure in each ring
考题
单选题The purpose of the low pressure cut-out switch is to （）.A
maintain liquid refrigerant at the suction of the compressorB
maintain a preset suction pressure to the compressorC
start and stop the compressor at preset operating pressuresD
operate at minimum efficiency
考题
单选题When an engine is starting and has got a sufficiently high speed, say about 20 rpm,（）A
the starting air supply is cut off and fuel is injected into the cylindersB
the fuel feeding is cut off and the turning gear is put inC
the starting air supply is cut off and turning gear is taken outD
the electric blower is shut down and fuel is injected into the cylinders
考题
单选题Which sequence is correct when launching a lifeboat stowed in gravity davits?（）A
Release gripes，turn on emergency disconnect switch，release frapping linesB
Release tricing pennants，turn on emergency disconnect switch，release frapping linesC
Operate limit switches，release gripes，lift brakeD
Release gripes，lift brake，release tricing pennants
考题
单选题Limit switches are used on which davits?（）A
Sheath-screw davitsB
Gravity davitsC
Radial davitsD
Quadrantal davits
热门标签
最新试卷
