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问题
单项选择题
使用分析天平称样时,被称物的温度()。
A、应和天平温度基本一致
B、应高于天平的温度
C、应低于天平的温度
答案
参考答案:A
填空题
选择反义词填空。
tall strong thin long small
1. Mike has short hair. Amy has
hair.
2. I'm short. My mother is
.
3. Xiaoming is thin. Zhang Peng is
.
4. She has big eyes, but I have
eyes.
5. The elephant is fat. The monkey is
.
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选择题
在10件产品中,有3件次品,从中任取4件,则恰有两件次品的取法种数为( )
X
0
1
P
m
2m
A.63
B.96
C.210
D.252
查看答案