拉移放顶煤工作面后部输送机拉移弯曲段不小于（）米。A、5 B、1_爱下问搜题

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问题单项选择题

拉移放顶煤工作面后部输送机拉移弯曲段不小于（）米。

A、5

B、10

C、15

D、20

答案

参考答案：C

填空题

Look and choose. 选择单词填空完成对话。

fine, friend, He, Hello, Hello, meet, new, school, She, Yes

1. Mike:             , Mary.
    Mary:             , Mike. How are you?
    Mike: I'm             , thanks. And you?
   Mary: I'm fine, too. Thanks.

2. Mary: Mike, this is Zhang Lingling. She is my friend.              is a             student in school.
             Lingling, this is Mike.             is my            .
    Mike: Hi, Lingling. Nice to meet you.
    Lingling: Nice to              you, too, Mike.
    Mike: Are you ready for             ?
    Lingling:             !
    Mary: Let's go to school.

填空题

一个正方形的边长是10厘米，如果边长减少4厘米，则它的面积减少______平方厘米．