电气运行值班人员充分利用眼看、()、()和手摸来检查、分析电气设备运行是否正常。
参考答案:鼻嗅、耳听
22. We know a good deal about the people who lived in China 4, 000 years ago, because they ______write and leave written records for those who lived after them.
A.could
B.should
C.must
D.Shall
燃烧是物质产生的一种放热发光的化学反应,这种反应,就叫做()。