题目
______is always needed, even if only for lighting. So after a ship goes into service it is extremely rare for the main bus-bars to be made dead.A. Circuit breaker.B. Storage battery.C. Governor.D. Electrical supply.
______is always needed, even if only for lighting. So after a ship goes into service it is extremely rare for the main bus-bars to be made dead.
A. Circuit breaker.
B. Storage battery.
C. Governor.
D. Electrical supply.
题目解答
答案
D. Electrical supply.