39个十除以4个十，商是______个十，余数是______个十．

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问题填空题

答案

因为39÷4=9…3，

所以39个十除以4个十，商是9个十，余数是3个十．

故答案为：9；3．

多项选择题

（）属于十分精密的机械。

A．车床

B．螺纹磨床

C．铣床

D．坐标镗床

E．刨床

单项选择题

Many students agreed to come, but some students against because they said they don’t have time.()

A. did not because they say they did not

B. were against because they say they don’t

C. did not because they said they did not

D. were against coming because they said they don’t