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【单选题】
在机床加工零件的过程中引起加工误差的原因很多,下列属于常值系统性误差的是( )A.
热变形误差
B.
机床溜板的摩擦
C.
刀具长度的改变
D.
螺距误差
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皮皮学刷刷变学霸
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【简答题】为自己喜欢的明星设计一款连衣裙(效果图+款式图)
【单选题】We love to sit on the floor and _____________ the beach and the sea.
A.
look out of
B.
look out at
C.
look out
D.
look for
【单选题】We _____the floor and _____ all the windows.
A.
mopped cleanned
B.
moped cleaned
C.
mopped cleaned
D.
moped cleanned
【单选题】We ( )the floor and ( ) all the windows.
A.
mopped, cleanned
B.
moped, cleaned
C.
mopped, cleaned
D.
moped, cleaned
【单选题】We __ ___the floor and _____ all the windows.
A.
mopped… cleanned
B.
moped… cleaned
C.
mopped…cleaned
【单选题】We___the floor and____all the windows.
A.
moped,cleaned
B.
mopped,cleanned
C.
mopped,cleaned
D.
moped,cleanned
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