单项选择题

For each person it is certified to carry，a lifeboat on an oceangoing passenger vessel must be provided with all of the following EXCEPT（）.

A.3 litres of water
B.1 unit of provisions
C.1 seasickness kit
D.1 life preserver

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单项选择题

Before hydraulic starting of an engine on a covered lifeboat，what need NOT be checked?（）

A.Fuel supply line valve
B.Pressure registered on the accumulator gauge
C.Cold-spark voltage readings test lamp
D.Engine stop control

单项选择题

Aluminum lifeboats are subject to damage by electrolytic corrosion (the aluminum being eaten away). In working around boats of aluminum you must be very careful（）.

A.to keep the boats covered at all times
B.not to leave steel or iron tools lying in or near these boats
C.to keep an electric charge on the hull at all times
D.to rinse these boats regularly with salt water

单项选择题

All inflatable liferafts have（）.

A.safety straps from the overhead
B.built in seats
C.releasing hooks at each end
D.water stabilizing pockets