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）
Mechanical lifting of air by the upslope slant of the terrain is called ______.
A.vertical lifting
B.convective lifting
C.advective lifting
D.topographic lifting
参考答案
更多 “ Mechanical lifting of air by the upslope slant of the terrain is called ______.A.vertical liftingB.convective liftingC.advective liftingD.topographic lifting ” 相关考题
考题
An automobile sling is used for ________A.lifting aircraft and helicoptersB.lifting any kinds of cargoC.lifting the heavy boxesD.lifting cars and trucks
考题
The experiment is carried cut to prove ______.A. water pushes on your body when you swim underwater.B. the earth is surrounded by a layer of air called the atmosphere.C. the pressure of air around us has a powerful force.D. the air pressure is not equalized around us.
考题
Personnel who are moving or handling material aboard ship should NOT follow which of the listed practices?A.Signaling that all personnel are clear before lifting or lowering materialB.Examining material for sharp edges or protruding points before handlingC.Closing, tagging or securing valves that permit entrance of steam, water, or air into a fitting or other equipmentD.Throwing materials from high places to the deck
考题
题干材料：Due to the large amount of heat picked up by the air in boiler and engine rooms, it would be impracticable to maintain ambient conditions within the comfort zone by air conditioning or any other means. The normal practice is to provide copious mechanical ventilation; in boiler rooms, the quantity is equated to the combustion requirements, while in a motor ship engine room the supply may be 25-50% in excess of the requirements of the engines.The axial flow fan is particularly suited to handle these large air volumes at the moderate pressures required, while of course the “straight-through” flow feature places it at an advantage over the centrifugal fan.The increasing adoption of automation, with the provision of a separate control room makes less significant the fact that comfort conditions cannot be maintained in the engine room all the time.问题：Which of the following devices should be taken to maintain ambient conditions of the boiler and machinery space?A.air compressorB.air coolerC.air-conditioning plantD.mechanical ventilation plantIn a motor vessel, the air quantity which the engine room need is_______ of the requirements of the engines.A.less than 25-50%B.more than 125-150%C.more than 25-50%D.less than 125-150%According to this passage, which of the following statements is true?A.In boiler and machinery spaces, there is the air conditioningB.In the boiler rooms the requirement of air volume should meet 25-50% of combustion requirementC.To maintain the comfort zone in the separate control room the air conditioning plant should be fittedD.The comfort conditions can be maintained in the engine room all the timeAt the middle pressure and large air quantity,_________ is more suitable.A.an axial flow fanB.a radial flow blowerC.a centrifugal fanD.an auxiliary blower请帮忙给出每个问题的正确答案和分析，谢谢！
考题
Your vessel has a gasoline engine and a mechanical exhaust ventilation system．BEFORE starting the engine，the exhaust blower should be run long enough to ______．A.warm up the exhaust blower motorB.provide a proper supply of fresh air for the engine（s）C.see the system is in good operating conditionD.insure at least one complete change of air in the compartments concerned
考题
What power source actuates a solenoid valve ________．A.Air pressureB.Hydraulic pressureC.Electric currentD.Mechanical force
考题
Current refers to the ______.A.vertical movement of the waterB.horizontal movement of the waterC.density changes in the waterD.None of the above
考题
LIFTING THE ANCHOR FROM THE BOTTOM is called ______.A.broaching the anchorB.shifting the anchorC.walking the anchorD.weighing the anchor
考题
Due to the large amount of heat picked up by the air in boiler and engine rooms, it would be impracticable to maintain ambient conditions within the comfort zone by air conditioning or any other means. The normal practice is to provide copious mechanical ventilation; in boiler rooms, the quantity is equated to the combustion requirements, while in a motor ship engine room the supply may be 25-50% in excess of the requirements of the engines.The axial flow fan is particularly suited to handle these large air volumes at the moderate pressures required, while of course the “straight-through” flow feature places it at an advantage over the centrifugal fan.The increasing adoption of automation, with the provision of a separate control room makes less significant the fact that comfort conditions cannot be maintained in the engine room all the time. Which of the following devices should be taken to maintain ambient conditions of the boiler and machinery space?A.air compressorB.air coolerC.air-conditioning plantD.mechanical ventilation plant
考题
Torque允许使用（）编辑器来手动修改地形。A、World EditorB、Terrain EditorC、Terrain Terraform EditorD、Terrain Texture
考题
EGPWS探测出30秒内飞机与地形有冲突时（）A、驾驶舱发出CAUTION TERRAIN音响B、ND上出现琥珀色TERRAIN字符和地形显示C、驾驶舱发出TERRAIN、PULL UP音响；PFD上红色PULL UP字符，ND上出现红色TERRAIN字符和地形显示
考题
单选题Air trapped in the hydraulic fluid of a steering system should be indicated by （）.A
the pump over-speedingB
an improper rudder responseC
bubbles in the sight glassD
ram relief valves lifting
考题
单选题The process to remove exhaust gases by blowing in fresh air is called （）.A
chargingB
superchargingC
startingD
scavenging
考题
单选题With one or more cylinders out of operation, the engine speed must be reduced because（）A
in such cases, the air supply is no longer optimal, the thermal load will be higherB
governor hunting will occurC
torsional vibrations as other mechanical vibrations may occurD
all of the above are correct
考题
单选题LIFTING THE ANCHOR FROM THE BOTTOM is called（）.A
broaching the anchorB
shifting the anchorC
walking the anchorD
weighing the anchor
考题
单选题重吊杆用于吊大的重件。（）A
Heavy derrick is used for lifting large heavy cargo.B
Derrick is used for lifting large heavy cargo.C
Heavy derrick is used for lifting dry bulk cargo.D
Derrick is used for lifting dry bulk cargo.
考题
单选题The ratio of the weight of moisture contained in a given volume of air, to the weight of moisture that the same sample would hold if saturated, is called the（）.A
absolute humidityB
relative humidityC
specific humidityD
total humidity
考题
单选题A number of biological sewage treatment plants are in use at sea but nearly all work on what is called the extended aeration processBasically the consists of oxygenating the liquor by bubbling air through itAccording to the above two sentences, the word "this" means （）.A
a sewage treatment plantB
the extended aeration processC
the liquorD
the bubbling air
考题
单选题“Tell All the Truth but Tell It Slant” is a poem written by _____.A
Sylvia PlathB
Langston HughesC
Emily DickinsonD
Robert Lowell
考题
单选题The amount of moisture in a given sample of air, when compared with the amount of moisture the air could hold if totally saturated at the existing temperature of the sample, is called （）.A
absolute humidityB
specific humidityC
effective humidityD
relative humidity
考题
单选题A number of biological sewage treatments plants are in use at sea but nearly all work on the principle called （）A
deoxygenatingB
extended aerationC
oxygenatingD
bubbling air
考题
单选题A spreader bar is used to（）.A
increase the lifting capacityB
increase the lifting radiusC
protect the slingsD
protect the upper part of a load
考题
单选题The process of supplying a diesel engine cylinder with air at a pressure greater than atmospheric is called（）.A
engine displacementB
super-aspiratingC
air injectionD
supercharging
考题
单选题Personnel who are moving or handling material aboard ship should NOT follow which of the listed practices?（）A
signaling that all personnel are clear before lifting or lowering materialB
Examining material for sharp edges or protruding points before handlingC
Closing, tagging, or securing valves that permit entrance of steam, water, or air into a fitting or other equipmentD
Throwing materials from high places to the deck
考题
单选题Mechanical lifting of air by the upslope slant of the terrain is called（）.A
vertical liftingB
convective liftingC
advective liftingD
topographic lifting
考题
单选题The main distribution duct in an air conditioning system which contains the cooling coils and filters is called the（）A
manifoldB
condenserC
chamberD
plenum
考题
单选题The minimum concentration of a vapor in air which can form an explosive mixture is called the（）.A
auto-ignition pointB
flash pointC
lower explosive limit (LEL)D
threshold limit value (TLV)
热门标签
最新试卷
