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【多选题】
陆面过程可以为大气提供以下哪几项( )A.
摩擦力
B.
感热
C.
水汽
D.
科氏力
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反馈参考答案：
举一反三
【简答题】In talking about the role of the U. N., the author says that frontiers of nations have lost their meanings because of____________.
【单选题】There is a U. N. convention that can cover ______.
A.
problem between neighbors
B.
problems on air pollution
C.
problem between states which do not share a border
D.
trans-boundary air pollution
【单选题】听力原文： A U. N. Security Council delegation travels to South Africa on the first stop of a nine - nation African tour aimed at bolstering peace efforts in the central Great Lakes region. The 12- member ...
A.
strengthening the ties between UN body and South Africa
B.
providing economic aid to South Africa
C.
monitoring comprehensive ceasefire agreement
D.
bolstering peace efforts in the central Great Lakes regions
【简答题】质量为 的小球,用轻绳 AB 、 BC 连接,如图所示。剪断绳 AB 前后的瞬间,绳 BC 中的张力比 。
【简答题】n.[U] 哲学
【单选题】The middle tier of members in the proposed structural changes of the U. N. would ______.
A.
have a veto
B.
be permanent
C.
be elected again every four years
D.
comprise 9 members
【单选题】A member country cannot ally (结盟) itself with ______.
A.
other U. N. member countries
B.
other countries not members of the U. N.
C.
countries resisting openly the U. N.
D.
states against which the U. N. has ever taken preventive or enforcement action
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