等离子弧可用于（）和（）两种用途。_爱下问搜题

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问题填空题

等离子弧可用于（）和（）两种用途。

答案

参考答案：切割；焊接

选择题

找朋友，把对应单词的序号写在题前的括号内。

( ) 1. father's father
( ) 2. mother's mother
( ) 3. father's brother
( ) 4. mother's sister

A. grandmother
B. grandfather
C. aunt
D. uncle

选择题

Is this the reason _____ at the meeting for his carelessness in his work?

A．what he explained

B．why he explained

C．he explained

D．how he explained