皮皮学，免费搜题
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【单选题】
确定底孔直径的大小，要根据工件的（ ）、螺纹直径的大小来考虑。A.
大小
B.
螺纹深度
C.
重量
D.
材料性质
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W: John, I don't know what to get for your father. He bus just about everything, doesn't he? Do you have any suggestions? M: Why don' t yon get him a pocket calculator? Q: Why doesn't the woman k...
A.
She feels that he won't accept anything.
B.
She' s sure he already has a pocket calculator.
C.
She thinks he has almost everything he wants.
D.
She' s afraid he wants more than she can afford.
【单选题】采用数控铣床加工平面螺旋槽时,下列说法正确的是( )。
A.
可直接人工编程输入键盘，不须通过穿孔纸带
B.
螺旋铣刀是用螺杆直接紧固
C.
在铣床主轴内进行手动对刀时，可直接使用手动快速移动方式
D.
利用分度头进行加工
【单选题】听力原文：W: John, I don't know what to get for your father. He has just about everything, doesn't he? Do you have any suggestion? M: Why don't you get him a pocket calculator? Q: Why doesn't the woman kno...
A.
She feels that he won't accept anything.
B.
She's sure he 'already has a pocket calculator.
C.
She thinks he has almost everything he wants.
D.
She's afraid he wants more than she can afford.
【简答题】听力原文： About 2 months ago, we ordered the new photo copiers that they were selling. But they still haven't appeared. Now they've written to say they are sorry they weren't delivered on time. They expec...
【单选题】20世纪初，清政府已经完全变成帝国主义统治中国的工具，最能说明这一点的是( )。
A.
严禁中国人民反帝
B.
改总理衙门为外务部
C.
同意拆毁大沽炮台
D.
中国内地全部开放
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