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【单选题】导轨加工多段对接的较长床身,如6M龙门刨的床身是由3 段对接的,若没有设备来加工全长,只有分段加工,这就要保证三段床身导轨的几何形状,空间位置完全相对应。一般采取( )为基准的方法。
A.
做模具
B.
精密计算
C.
仿形加工
D.
做样板
【单选题】That is the day ______ he found his new job.
A.
on when
B.
which
C.
on which
D.
in which
【单选题】导轨加工多段对接的较长床身，如6M龙门刨的床身是由3 段对接的，若没有设备来加工全长，只有分段加工，这就要保证3段床身导轨的几何形状，空间位置完全相对应。一般采取( )为基准的方法。
A.
做模具
B.
精密计算
C.
仿形加工
D.
做样板
【单选题】I can’t _____ that you will make a lot of money.
A.
undertake
B.
promise
C.
agree
D.
attempt
【单选题】— I passed my driving test at the first _____. — Congratulations! [ ]
A.
purpose
B.
desire
C.
attempt
D.
wish
【简答题】阅读理解 Children in the USA like K Day very much. K is for kites. March 7 is the day. On that day lots of children go out in the open air. They take their kites with them. One kite is very big. Others ar...
【简答题】阅读理解。 Children in the USA like K Day very much. K is for kites. March 7 is the day. On that day lots of children go out in the open air. They take their kites with them. Some kites are very big . Othe...
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