（）――井下高压层的地层流体（油、气或水）把井内某一薄弱地层

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问题填空题

（）――井下高压层的地层流体（油、气或水）把井内某一薄弱地层压破，流体由高压层大量流入被压破的地层内的现象。

答案

参考答案：地下井喷

句型转换

按要求改写句子

1. He can come to my party this evening. (改为否定句)

He _____ _____ to my party this evening.

2. Tom went home by bus. (对画线部分提问)

_____ _____ Tom _____ home?

3. Linda can sing many French songs. (改为一般疑问句并作肯定回答)

— _____ Linda _____ many French songs?

— _____, _____ _____.

4. We're studying for the test. (对画线部分提问)

_____ _____ you studying?

5. I have to do my homework on Sunday. (改为一般疑问句)

_____ _____ _____ to do your homework on Sunday?

填空题

手工电弧焊主要根据（）、（）和（）选择焊条。焊一般碳钢和低合金钢主要是按（）原则选择焊条的强度级别。