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【单选题】
在下列铣床固定循环指令中,哪一个实现反镗加工?( )A.
G80
B.
G70
C.
G81
D.
G87
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反馈参考答案：
举一反三
【简答题】Lying in the sun on a rock, the cougar(美洲狮) saw Jeb and his son, Tom, before they saw it. Jeb put his bag down quickly and pulled his jacket open with both hands, himself look big to the cougar...
【单选题】听力原文： Tom was going into his usual bar before lunch when he saw a poorly dressed man fishing in a small pool of rain-water about five centimeters deep outside it. Tom stopped and watched the man for a...
A.
Smoking.
B.
Flying.
C.
Drinking.
D.
Fishing.
【单选题】Tom’s father burst out ___ when he saw Tom eating candy happily in the police refuge for lost children.
A.
tears
B.
tear
C.
tearing
D.
crying
【单选题】Tom ______ be in his office so late that night. I saw him with his friends in the restaurant .
A.
can’t
B.
may not
C.
mustn’t
D.
shouldn’t
【简答题】Lying in the sun on a rock, the cougar(美洲豹)saw Jeb and his son, Tom, before they saw it. Jeb put his bag down quickly and pulled his jacket open with both hands, himself look big to the cougar....
【简答题】Lying in the sun on a rock, the cougar（美洲豹）saw Jeb and his son, Tom, before they saw it. Jeb put his bag down quickly and pulled his jacket open with both hands, himself look big to the cougar....
【单选题】______when he saw his wife's face did Tom realize the true meaning of her remark.
A.
Just
B.
Never
C.
Only
D.
Usually
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