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【单选题】
关于采样点密度,区域调査地下水采样点山区和丘陵区按每 100 ~ 200km 2 ( )组样A.
1
B.
2
C.
3
D.
4
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【单选题】下面程序运行时,内层循环的循环总次数是( ) For m = 1 To 3 For n = 0 To m - 1 Next n Next m
A.
6
B.
3
C.
0
D.
9
【简答题】Run freely ——A lesson about Courage One afternoon,many years ago，I went to pick up my mother from work.I got there a little early so I_______ the car by the roadside and waited for her. As I looked __...
【简答题】One afternoon, many years ago, I went to pick up my mother from work. I got there a little early so I 1 the car by the roadside and waited for her. As I looked 2 the car window, there was a small park...
【简答题】简述分组交换方式的主要优缺点。
【单选题】. Clean water is ____ necessary than fresh air to the people living in big cities.
A.
no more
B.
no less
C.
much as
D.
not any more
【单选题】The days are gone________you can breathe fresh，unpolluted air or drink clean, unpolluted water in the countryside.
A.
when
B.
that
C.
where
D.
which
【单选题】When manual handling heavy objects
A.
you should use a carrying device to lift an object over 15kgs
B.
you should not lift any object over 15kgs on your own
C.
you should bend your knees before lifting
D.
All of the above
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