有关发电车中报警名称的描述中，不是康明斯发电车中所具有的报警是（）。
A.过电流预报警
B.绕组高温报警
C.高水温预报警
D.低油温报警
参考答案：D
8088/8086一切复位信号至少维持( )个时钟周期的高电平有效。
A．1
B．2
C．3
D．4
— We took a taxi and arrived at the station an hour earlier.
— You ____ a taxi. Time was enough for you to go there by bus.[ ]
A. needn't take
B. needn't to take
C. needn't have taken
D. don't need take
