更多"What is counterculture? What are so"的相关试题:
[单项选择]In some type of two-stroke engines, besides some small holes for（）, starting valve, safety valve, indicator cock, and central opening in each cylinder cover for mounting the（）
A. fuel valves；exhaust valve
B. exhaust valves；inlet valve
C. fuel valves；inlet valve
D. exhaust valves；fuel valve
[单项选择]The most common forms of main drive used on deck auxiliaries are （）.
A. steam plants, electric motors and compressed air
B. diesel engine, hydraulic machinery and compressed air
C. steam plants, electric motors and hydraulic machinery
D. diesel engines, steam plants and hydraulic machinery
[单项选择]Which of the lists forms of heat transfer, if any, is illustrated by the flow of combustion gases through a boiler?（）
A. Natural convection only
B. Forced convection only
C. Both natural convection and forced convection
D. None
[单项选择]Some vessels are equipped with a water lubricated stern robeWhen at sea, operating under normal conditions, the water service valve from the ships saltwater system to the bearing should be （）.
A. closed, and no leakage permitted across the shaft packing
B. closed, and only slight leakage permitted across the shaft packing
C. open, and no leakage permitted across the shaft packing
D. open, and only slight leakage permitted across the shaft packing
[单项选择]A tropical storm is building strength some distance from your ship. Waves are coming from the east，with periods increasing from 5 seconds to 15 seconds. The swell is from the east. Where was the storm when these new swells were generated? （）
A. To the north of you
B. To the south of you
C. To the east of you
D. To the west of you
[单项选择]When the garbage is mixed with some discharges having different disposal or discharge requirements, shall apply（）
A. any requirement appointed by the Officer
B. the most suitable requirement
C. the most stringent requirement
D. no requirement
[单项选择]Valve cages are used on some large diesel engines to （）
A. reduce wear on the valve stem
B. permit the use of alloy valve seat materials
C. reduce heat transfer from the valve seat
D. facilitate valve removal for servicing
[单项选择]The purpose of designing some waste heat boilers with sinuous fire tubes, is to（）
A. increase exhaust gas velocity through the boiler
B. reduce accumulations of carbon deposits on the heat transfer surfaces
C. eliminate exhaust gas pulsations and noise
D. increase the rate of heat transfer to the waterside
[简答题]What did the British Disease refer to?
[简答题]What are the main functions of Parliament?
[单项选择]In the sentence “In some designs the cylinder oil is timed so that the oil injects only on the piston ring belt, the "piston ring belt" means （）.
A. piston crown
B. piston ring groove
C. piston skirt
D. piston ring area
[单项选择]In order to control thermal stresses, some types of modern engines use pistons with（）
A. heavy wall and intensive cooling
B. heavy wall and no cooling
C. thin wall and no cooling
D. thin wall and intensive cooling
[单项选择]The over-speed trip device installed in some diesel engines is automatically actuated by（）
A. spring force
B. hydraulic pressure
C. centrifugal force
D. mechanical linkage
[单项选择]The boom indicator tells the operator at what angle the boom is compared to the（）.
A. horizontal position of the boom
B. vertical position of the boom
C. horizontal position of the load being lifted
D. vertical position of the load being lifted
[单项选择]Some chloronated flourocarbon refrigerants may decompose into a toxic irritating gas if it is （）.
A. stored at temperatures below 60 degrees Fahrenheit
B. charged into a system having copper fittings
C. allowed to mix with compressor oil
D. exposed to an open flame or hot surface
[单项选择]The exhaust boilers are used to recover some of （） carried in the exhaust gas from the main engine.
A. water
B. oil
C. heat
D. steam
[单项选择]In some parts of the world there is often a slight fall in tide during the middle of the high water period. The effect is to create a longer period of stand at higher water. This special feature is called a(n)（）.
A. apogean tide
B. double high water
C. perigean tide
D. bore
[单项选择]With the crank in position in the engine, some measurements can be taken by a special bridge gauge and （）.
A. a micrometer
B. a bowl
C. a feeler gauge
D. a wrench
[单项选择]There’s been some dirty work with the club accounts and some money is missing.（）
A. 俱乐部的帐目有鬼，有些钱不知去向。
B. 俱乐部的帐目有卑鄙的勾当，有些钱不知去向。
C. 俱乐部的帐目是吃力不讨好的工作，有些钱不见了。
