A.a motor-driven steering wheel
B.a pneumatic steering wheel
C.a hand-driven steering wheel
D.an electric steering wheel
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A.the tiller arms
B.the swivel blocks
C.hunting gears
D.the rams
A.horizontal axis
B.crankshaft
C.vertical axis
D.camshaft
A.neutral
B.end
C.opening
D.closure
A.windlasses
B.drums
C.capstans
D.warp ends
A.horse power
B.high pressure compressor
C.hand pump
D.high pressure
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The usual symptoms of cavitation in a centrifugal pump is （）.
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
The output volume of a positive fixed displacement pump can be changed only by （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.