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【单选题】
刀具直径为 8mm的高速钢立铣刀铣削铸铁件时,主轴转速为1100r/min,切削速度为( )。A.
90mm/min
B.
28mm/min
C.
2.3m/min
D.
10m/min
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举一反三
【单选题】According to the conversation, the internal recruitment has the following disadvantages EXCEPT
A.
not enough applicants.
B.
rarely bringing fresh ideas to the company.
C.
lots of internal political problems.
D.
requiring more time to find qualified applicants.
【单选题】Simon used to be ______, but now he takes part in different activities and has made many new friends.
A.
honest
B.
lively
C.
active
D.
quiet
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