單項(xiàng)選擇題With reference to operating a four-ram steering gear system under emergency conditions, which one of the following statements is incorrect?（）

A.Only one pump should be used at any time
B.The ship speed should be reduced to 70% of the normal
C.Watch keeping of the steering gear should be increased
D.Limitations of the steering gear should be logged but the bridge need not be informed


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1.單項(xiàng)選擇題With reference to a radial piston pump, which one of the following statements is false?（）

A.Surrounding the fixed shaft is a hollow shaft
B.This hollow shaft carries radial bores
C.Each bore is fitted with a well-lapped plunger
D.There are always even numbers of bores

2.單項(xiàng)選擇題With reference to an axial piston pump, which one of the following statements is true?（）

A.The cylindrical barrel is coupled to the motor
B.The cylindrical barrel has an odd number of bores
C.The bores end in sockets
D.The sockets fit in the swash plate

3.單項(xiàng)選擇題With reference to a two ram actuating mechanism, which one of the following statement is false?（）

A.The rams work inside cylinders
B.The cylinders have glands sealing their open ends
C.The rams are connected to a cross-head
D.The cross-head is mounted on the rudder stock

4.單項(xiàng)選擇題As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engineSo a water separator should be mounted beneath the bottom part of the engine inlet manifoldA water separator is used in order to （）.

A.keep the air from being carried into the engine
B.keep the moisture from being condensed
C.keep the danger from being carded into the engine
D.take away the condensate from the air