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【判断题】
在局部小范围内进行测量时,可以用水平面代替大地水准面A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】The teachers often tell us _________ in the river. It’s dangerous. A. not swim B. don’t swim C. not swimming D. not to swim
A.
not swim
B.
don’t swim
C.
not swimming
D.
not to swim
【单选题】Teachers often tell us in the river after school.
A.
don’t swim
B.
not swim
C.
not to swim
【单选题】The boys don’t know ___________.
A.
how do they swim
B.
how swim
C.
they how swim
D.
how to swim
参考解析：
知识点：
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