一、单选题
1.【答案】B
2.【答案】B
3.【答案】C
4.【答案】D
5.【答案】D
6.【答案】A
7.【答案】C
8.【答案】C
9.【答案】A
10.【答案】C
11.【答案】D
12.【答案】C
13.【答案】A
14.【答案】D
15.【答案】D
16.【答案】B
17.【答案】B
18.【答案】D
19.【答案】B
20.【答案】B
二、填空题
21.【答案】振动;空气;声源
22.【答案】220;0.1
23.【答案】10Ω;3.6W
24.【答案】不断升高;非晶体
25.【答案】2×103;不变
26.【答案】大于
27.【答案】9.8×10;9.8×10;1000;9.8×10;上浮
28.【答案】U﹣Ux;
29.【答案】等于
30.【答案】在;钩码;不能