文档文本内容
D.
·
{#{QQABBQ6AgggAAJIAAAgCQQXgCgGYkBCCAAgGgAAYIAIAwBFABCA=}#}*
2
{#{QQABBQ6AgggAAJIAAAgCQQXgCgGYkBCCAAgGgAAYIAIAwBFABCA=}#}*
{#{QQABBQ6AgggAAJIAAAgCQQXgCgGYkBCCAAgGgAAYIAIAwBFABCA=}#}&
a
*
{#{QQABBQ6AgggAAJIAAAgCQQXgCgGYkBCCAAgGgAAYIAIAwBFABCA=}#}1 2 3 4 5 6
B D A C B D
7 8 9 10 11
C C C A D
二．非选择题
12. (1)12.90
(2) A
(3) A
(4) 𝜋2
(5) 0.01
13. （1）n=2;
2√5
(2)
5
14. (1)2s
（2）3.9m
（3）6.5s
12
15. （1）v= （n=0,1,2……）
3+4𝑛
（2）s=5cm,x=1cm
（3）y=4sin(πt+π)cm
16. (1)I=3N*s
(2)0.1
(3)[0.15,0.225)