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【单选题】
While l was waiting for her，I killed time__________ looking in the show windows．A.
by
B.
with
C.
in
D.
with
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【单选题】Perhaps I’m not quite fit for the job, but ________, please let me have a try.
A.
anyhow
B.
in fact
C.
or so
D.
otherwise
【单选题】— Will $ 1,000 _____ the cost of the trip? — I’m afraid not. Perhaps I need _____ $ 400.
A.
pay; another
B.
charge; more
C.
cover; another
D.
afford; more
【单选题】----Will $ 1,000 _______ the cost of the trip? ----I’m afraid not. Perhaps I need _______ $500.
A.
pay; another
B.
charge; more
C.
cover; another
D.
afford; more
【单选题】— Do you know when he ________ the trip to the USA? — Perhaps next week, but I’m not sure.
A.
makes
B.
made
C.
has made
D.
is making
【简答题】简述数控机床各组成部分的作用。
【简答题】简述数控机床各基本组成部分的作用。
【简答题】简述数控机床的组成及各部分作用。
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