单项选择题
（） is used to produce electric power.
A.An alternator
B.fresh water generator
C.A compressor
D.A clarifier
点击查看答案&解析
相关考题
-
单项选择题
The system will include various （） such as low tank level alarms and remote operation of tank outlet valves in the events of a fire.
A.Switches
B.panels
C.alarm units
D.safety devices -
单项选择题
Electric insulation is made of organic substances and so gradually （） with age.
A.deteriorates
B.increases
C.are fouled
D.becomes better -
单项选择题
On commonly used ships,if two A√Cgenerators are operated in parallel, the load is distributed evenly by （）.
A.varying the D-Cexciter voltage
B.varying the reluctance of the air gap
C.regulating the speed of prime mover
D.shorting out part of the armature windings
