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【单选题】
无人机应选择以下哪些场所作为飞行场地？
A.
开阔的场所
B.
建筑物密集的场所
C.
人员密集的场所
D.
离高压线近的场所
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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举一反三
【单选题】Three years later, Heathcliff returns with and .
A.
material wealth
B.
awful revenge
C.
Both A and B
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【单选题】Two years ______. He married a woman who was three years older than him. [     ]
A.
later
B.
ago
C.
past
D.
passed
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【判断题】对于含尘浓度不太高的局部排风系统，排出的空气经除尘净化后，达到标准可再循环使用。
A.
正确
B.
错误
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【单选题】. They got married in 2001 and three years later they ________ their child.
A.
have
B.
had
C.
had had
D.
will have
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【单选题】He was so dit that he _____ as a fresher in Qinghua university three years later. [     ]
A.
brought up
B.
ended up
C.
picked up
D.
looked up
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【单选题】昆虫的腹部一般由（）节组成，第（）腹节的两侧常具有一对气门。
A.
7~9；2~5
B.
9~11；1~8
C.
3~8；1~7
D.
9~12；1~8
查看完整题目与答案
【判断题】对于含尘浓度不太高的局部排风系统,排出的空气经除尘净化后,达到标准可再循环使用。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】I couldn't sing English songs _____. [     ]
A.
for three years
B.
in three years
C.
three years ago
D.
three years before
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【单选题】( )发电机整流器上用于整流的二极管有 个。
A.
6
B.
8
C.
9
D.
11
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【判断题】昆虫腹部第1-8腹节的两侧常具有一对气门。
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】Three years later, Heathcliff returns with and .
A.
material wealth
B.
awful revenge
C.
Both A and B
查看完整题目与答案
【单选题】Two years ______. He married a woman who was three years older than him. [     ]
A.
later
B.
ago
C.
past
D.
passed
查看完整题目与答案
【判断题】对于含尘浓度不太高的局部排风系统，排出的空气经除尘净化后，达到标准可再循环使用。
A.
正确
B.
错误
查看完整题目与答案
【单选题】. They got married in 2001 and three years later they ________ their child.
A.
have
B.
had
C.
had had
D.
will have
查看完整题目与答案
【单选题】He was so dit that he _____ as a fresher in Qinghua university three years later. [     ]
A.
brought up
B.
ended up
C.
picked up
D.
looked up
查看完整题目与答案
【单选题】昆虫的腹部一般由（）节组成，第（）腹节的两侧常具有一对气门。
A.
7~9；2~5
B.
9~11；1~8
C.
3~8；1~7
D.
9~12；1~8
查看完整题目与答案
【判断题】对于含尘浓度不太高的局部排风系统,排出的空气经除尘净化后,达到标准可再循环使用。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】I couldn't sing English songs _____. [     ]
A.
for three years
B.
in three years
C.
three years ago
D.
three years before
查看完整题目与答案
【单选题】( )发电机整流器上用于整流的二极管有 个。
A.
6
B.
8
C.
9
D.
11
查看完整题目与答案
【判断题】昆虫腹部第1-8腹节的两侧常具有一对气门。
A.
正确
B.
错误
查看完整题目与答案