油泵过度发热的原因是什么?
参考答案:
油泵过度发热的原因是:油泵磨损或损坏;冷却不足或冷却中断;油的粘度过低。
We were just about ready to leave _____ it started to snow.
A.when
B.before
C.after
D.since
肝性脑病者呼吸有()。
A.酒味
B.肝臭味
C.烂苹果味
D.大蒜味
E.氨味