精密水准标尺是线条式因瓦合金钢标尺。（）_爱下问搜题

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问题判断题

精密水准标尺是线条式因瓦合金钢标尺。（）

答案

参考答案：对

选择题

All these gifts must be mailed immediately__________ in time for Christmas.

A．in order to have received

B．in order to receive

C．so as to be received

D．so as to be receiving

问答题简答题

问诊的内容有哪些？