单项选择题
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
Switchboards may be of the dead-front type in which all...
单项选择题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
The emergency generator or emergency battery is connect...
单项选择题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
The main generators are connected to（）.A.distribution b...
单项选择题The main generators are connected to（）.
