單項(xiàng)選擇題

Remote control means that （）.

A.the system is manned manually
B.the system is situated remotely from the operator
C.the system is controlled automatically
D.all the above

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單項(xiàng)選擇題

Switchboards may be of the dead-front type in which all live parts are installed behind （） and only the operation handles and instruments are on the front.

A.the capstan
B.the collector
C.the panels
D.the surface

單項(xiàng)選擇題

The emergency generator or emergency battery is connected to（） on most large ships.

A.distribution boards
B.section boards
C.emergency switch boards
D.main switch boards

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