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【判断题】
6Φ 18 2 ( -2 ) /4 表示 6 根直径为 18 的二级钢,上排 2 根,不深入支座,下排 4 根,全部深入支座。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Mr. Han is very old and he can’t______himself. So he lives with his children now.
A.
look at
B.
look after
C.
look like
D.
look for
【简答题】Mr. North’s extension number is .
【单选题】下列命题中，真命题是（ ）
A.
腰相等的两个等腰三角形全等
B.
每个定理都有逆定理
C.
有三个角相等的两个三角形全等
D.
有一个角是60°的等腰三角形是等边三角形
【单选题】— Why Mr. Wang was _____ the general manager of north area? —Because his excellent in sale. [ ]
A.
appointed to be
B.
made as
C.
sent to
D.
chosen to
【单选题】-Why was Mr. Wang ________the general manager of north area? -Because of his excellence in sale. [ ]
A.
appointed to be
B.
made as
C.
sent to
D.
choose to
【单选题】—Look, Mr. King is swimming in the pool. —It ________ be Mr. King. He has gone to Kunming on vacation. [ ]
A.
can
B.
can't
C.
must
D.
mustn't
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