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【多选题】
与卫星测绘和有人机测绘相比，无人机测绘具有的特点包括（）。A.
成本低、无人员伤亡的风险
B.
作业方式灵活便捷
C.
高空间分辨率
D.
飞行姿态的不稳定性
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反馈参考答案：
举一反三
【单选题】As we all know , bad eating habits and a of exercise may lead to health problems .
A.
lack
B.
limit
C.
need
D.
demand
【简答题】阅读理解。 Dreams may be more important than sleep. Some people don't need much sleep. But we all need to dream, scientists say. Dreams take up about one quarter of our sleeping time. People have several d...
【单选题】We ________ have bought so much food now that Suzie won't be with us for dinner. [ ]
A.
may not
B.
needn't
C.
can't
D.
mustn't
【单选题】— Listen! Is Tom singing in the classroom? — No. It be Tom. He has gone to Paris. [ ]
A.
may not
B.
needn't
C.
can't
【单选题】— ______ I visit Lucy on Sunday, Mum? — Yes, you______. [ ]
A.
Must; can
B.
May; may
C.
Need; need
D.
May; need
【简答题】阅读表达。 Dreams may be more important than sleep. Some people don't need much sleep. But we all need to dream, scientists say. (3) Dreams take up about one quarter of our sleeping time. People have sever...
【单选题】Interviewees may need to prepare _____ before participating in interviews. (Choose the best answer)
A.
job offers
B.
application letter
C.
resumes
D.
presen
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