（） is (are) not power supplied by main switchboard directly.

________is supplied with electricity by main switchboard directly not through sub-board on board

A.Deck machinery

B.Little power load

C.Some important load machinery

D.Stationary submersible pump

For _______the power is supplied by main switchboard directly not through sub-board

A.saving network cost

B.improving the reliability of supplying power to important load

C.preventing sequence reversing

D.increasing the power Factor of important load

A.Distribution board

B.Section board

C.Emergency switchboard

D.Main switchboard

Lubrication for the main reduction gears used with diesel engines is usually supplied by

A.oil from the main engine sump

B.an independent lube oil system

C.the stern bearing head tank

D.the stem bearing sump tank

A technician has been asked to ensure a PC is supplied with power for a short time, during apower failure. The technician should install which of the following devices to ensure thisrequirement is easily met?（）

A. Backup power generator

B. Uninterruptable power supply

C. Power line conditioners

D. Surge protectors

下列程序的运行结果是______。

define POWER(x) ((x)*(x))

main ()

{ int i=1；

printf("%d,%d",POWER(i++)，i);

}