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【多选题】
打蜡作业环境清洁，有良好（ ），有条件可设置专门的（ ）工作间。A.
通风
B.
安全
C.
环境
D.
打蜡
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皮皮学刷刷变学霸
举一反三
【简答题】水库的平面控制测量分 级 布设,分别为 、 、 。
【单选题】_____ a reply, he decided to write again.
A.
not receiving
B.
receiving not
C.
not having received
D.
having not receiving
【单选题】I am looking forward _________ your letter. [ ]
A.
to receive
B.
to receiving
C.
receive
D.
receiving
【单选题】--- What do you think of receiving and giving gifts? --- I think the art of receiving a gift is _____ than the art of giving.
A.
much more difficult
B.
very more difficult
C.
much difficult
D.
as difficult as
【简答题】水库的平面控制测量分 三 级 布设,分别为 、 、 。
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