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【判断题】
主轴转速应根据刀具允许的切削速度和工件(或刀具)直径来确定。A.
正确
B.
错误
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】有关多西环素的描述不正确的是
A.
具有强效、速效、长效特点
B.
为四环素类药物首选药
C.
抗菌作用强于四环素
D.
抗菌作用强于米诺环素
E.
可用于肾功能不全的患者
【单选题】—Mary's been offered a job in a university, but she doesn't want to take it. —________？ It's a very good chance.
A.
Guess what
B.
So what
C.
Who cares
D.
But why
【单选题】He's not a very good teacher-he doesn't know how to________children.
A.
solve
B.
handle
C.
handle with
D.
handle at
【单选题】—How much does a radio like this cost? —__________.
A.
I’d like to buy it
B.
it’s of very good quality
C.
About eighty-five dollars
D.
It depends on how you like it
【单选题】We have to think very carefully before we take any action, because it's a very serious／u&g
A.
We have to think very carefully before we take any action, because it's a very serious/u> situation we have encountered. A．ideal
B.
favourable
C.
good
D.
severe
【简答题】维生素D缺乏性佝偻病颅骨软化常见发生在
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