题目内容
(请给出正确答案)
[主观题]
Which of the following is a totally arbitrary one?A.Typewriter.B.Crack.C.Newspaper.D.Pig.
Which of the following is a totally arbitrary one?
A.Typewriter.
B.Crack.
C.Newspaper.
D.Pig.
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Which of the following is a totally arbitrary one?
A.Typewriter.
B.Crack.
C.Newspaper.
D.Pig.
第3题
煤气管道着火,管道直径在 ()以下者可直接切断煤气灭火。
A、100mm
B、125mm
C、150mm
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