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【名词解释】凿空投隙

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题目标签:凿空投隙空投
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【单选题】Save Pandas With the Switzerland-based World Wildlife Fund (WWF), China is making a concerted and dedicated effort to save the endangered pandas. The results, officials here in Chengdu indicate, are m...

A.
Switzerland is the country that contributes in the panda relief program
B.
the survival of pandas is an international concern
C.
it is too late to rescue the endangered pandas
D.
the lovely pandas will soon die out

【单选题】实施空投时禁止()。

A.
直升机机翼与陡峭山坡距离小于100米
B.
沿山坡向下飞行或向下坡方向进入转弯
C.
机长亲自投掷或者向后观察
D.
A、B和C