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

相关考题

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（）.

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

UMS stands for（）.A.ultra much spaceB.universal medium s...

单项选择题UMS stands for（）.

A.ultra much space
B.universal medium system
C.unit machined space
D.unattended machinery space

船舶电气与船舶安全