节气门开度增大加速装置就起作用。()
参考答案:错
The students encouraged _____ to go on.
A.one after another
B.one another
C.the other
D.one by one
一段炉炉管在运转中会出现()现象。
A.热管
B.热带
C.热斑
D.A、B和C