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【判断题】
普通平键有圆头(A型)、平头(B型)和(C型)三种形式,当轴的强度足够,键槽位于轴的中间部时,应选择A型为宜。A.
正确
B.
错误
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A.
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B.
3
C.
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D.
5
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A.
2
B.
3
C.
4
D.
5
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