The fuel injector pump is operated by () which drives the plunger up and down.
A. a separate motor
B. a cam
C. a generator
D. a chai
计算机工作时,整个处理过程中用到的数据和指令都存放在()中。
A. 内存
B. 外存
C. 处理器
D. 运算器
When the movement of engine is no longer required the pilot usually gives the order like this() .
A. Stop engine
B. Nothing to port
C. Finish engines
D. Finished with engine
电动机在运行中,允许电压在额定值的-5%~+10%范围内变化,电动机出力不变。
A. 正确
B. 错误