The operation between two fuel injections is called a working cycle, which consists of a fixed sequence of eventsWhat does "which" mean in this sentence?()
A. a working cycle
B. the operation
C. two fuel injections
D. event
查看答案
怎样用10点/像素的大小增大/减少字体尺寸()。
A. 上/下方向键
B. 按Shift+上/下方向键
C. 按Alt+上/下方向键
D. 按Ctrl+上/下方向键
V形天窗停电作业两接地线间距大于()m时,需增设接地线。
A. 500
B. 800
C. 1000
D. 1500