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【单选题】
焊接过程中,熔化金属自坡口背面流出,形成穿孔的缺陷称为( )。A.
未焊透
B.
未熔合
C.
烧穿
D.
气孔
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反馈参考答案：
举一反三
【单选题】173 Listening involves more than hearing sounds. The good listener
A.
Repeats some of the things said
B.
Finishes the speaker's sentences
C.
Writes everything down
D.
Nods his head frequently
【简答题】Listening for gist involves _______ process.
【单选题】91 Listening involves more than hearing sounds. The good listener
A.
Repeats some of the things said
B.
Finishes the speaker's sentences
C.
Writes everything down
D.
Nods his head frequently
【简答题】档案信息处理语言按其构成原理，可以分为分类法语言、________语言和代码语言等。
【简答题】请写出六种思维定式的类型
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