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【单选题】
It can be inferred from physical phenomenon ______.A.
the force of the electromagnetic field is too weak to be harmful
B.
the force of the electromagnetic field is weaker than the electric field that the cells generate
C.
electromagnetic field may affect health
D.
only more powerful radiation can knock electron out of human body
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举一反三
【单选题】This new type of TV set is very thin, and it is than a one-hundred-page book.
A.
less
B.
not thinner
C.
no thicker
D.
no thinner
【单选题】火灾探测器由于使用不当引起火灾误报主要因素有( )。1吸烟 2电气焊 3水蒸气 4探测器本身故障 5灵敏度过低 6灵敏度过高
A.
②③④⑥
B.
①②③⑥
C.
①②③⑤
D.
①②③④
【单选题】听力原文：W: Have you heard about the plane crash yesterday? It caused a hundred and twenty deaths. I'm never at ease when taking a flight. M: Though we often hear about air crashes and serious casual deed...
A.
The woman never travels by plane.
B.
Both speakers feel nervous when flying.
C.
The man thinks traveling by air is quite safe.
D.
The speakers feel sad about the serious loss of life.
【简答题】阅读理解。 Basketball is a young though it is over a hundred years old. In the year of 1891, a certain college was having some trouble with its boy students. The weather was bad. They had to stay ind...
【简答题】简述底部剪力法的适用条件。
【简答题】看图，根据图片所示信息填空完成下面的句子。 例: It is about one hundred and twenty kilometres from A to B. 1. It is about ___________ ___________ ___________ ___________ kilometres from B to C. 2. It is about ___________ __...
【单选题】下面说法不正确的是( )。
A.
Excel具有强大的计算功能
B.
Excel还具有数据库管理的一些功能
C.
Excel在制表．作图等数据分析方面的能力比一般数据库更胜一筹
D.
Excel的数据列表功能非常强大，遗憾的是，它不能对数据进行排序的操作
【简答题】简述底部剪力法的适用条件。
【简答题】简述底部剪力法的适用条件。
【单选题】火灾探测器由于使用不当引起火灾误报主要因素有______。 1.吸烟2.电气焊3.水蒸气4.探测器本身的故障5.灵敏度过低6.灵敏度太高
A.
2、3、4、6
B.
1、2、3、6
C.
1、2、3、5
D.
1、2、3、4
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