單項(xiàng)選擇題Storage batteries on T-Boats must be located（）.

A.in sight of the main engine(s)
B.in a tray lined with suitable material that resists damage from the electrolyte
C.in locked closets with restricted ventilation
D.near the bilge to lower the center of gravity and improve stability


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1.單項(xiàng)選擇題Please supply my vessel（）120 tons of diesel oil.

A.for
B.with
C.to
D.on

2.單項(xiàng)選擇題Overspeed of the diesel engine driving an electric generator could cause（）.

A.low voltage trip
B.reverse power trip
C.damage to windings
D.excessive exhaust temperatures

3.單項(xiàng)選擇題One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is（）.

A.the extra weight required for the diesel reduction gearing
B.a minimum speed for the engines that limits the minimum speed of the vessel
C.the higher fuel consumption per SHP
D.the low efficiency of the system when a controllable pitch propeller is used

4.單項(xiàng)選擇題On a vessel with a single propeller，transverse force has the most effect on the vessel when the engine is put（）.

A.full ahead
B.full astern
C.half ahead
D.slow astern

5.單項(xiàng)選擇題On a twin-screw，twin-rudder vessel，the most effective way to turn in your own water，with no way on，is to put（）.

A.one engine ahead and one engine astern，with full rudder
B.one engine ahead and one engine astern，with rudders amidships
C.both engines ahead，with full rudder
D.both engines astern，with full rudder