單項(xiàng)選擇題

Where tanks are arranged for either oil or ballast, （） must be fitted in the pipeline.

A.a change-over chest
B.a head tank
C.a emergency bilge pump
D.an air cooler

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單項(xiàng)選擇題

The control rod of a steering gear pump is attached at its outer end to （）.

A.the hunting gear
B.the rudder stock
C.the rudder controller
D.the feedback unit

單項(xiàng)選擇題

If a heavy sea strikes the rudder, the shock is transmitted through （） to the rams, this cause a sudden increase in oil pressure in one of the cylinders.

A.the control rod
B.the hunting gear
C.the floating ring
D.the tiller arm