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【判断题】
作用于刚体上三个相互平衡的力,若其中任何两个力的作用线相交于一点,则其余一个力的作用线必定交于同一点且与另外两力共面。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】型腔和分流道的排列有（）和（）两种。
【多选题】The documents such as bill of lading，air waybill，sea waybill and insurance policy used for international trade play very important roles for the parties concerned．Please point out which of the followi...
A.
Bill of Lading
B.
Sea Waybill
C.
Insurance Policy
D.
Air Waybill
【单选题】听力原文： Kuwait is a country which is quite small, but which is very rich. It has a population of a little more than a million, and it is situated at the North end of the Persian Gulf. This small desert ...
A.
13%
B.
16%
C.
14%
D.
15%
【单选题】Their country has plenty of oil, ______ ours has none.
A.
where
B.
as
C.
whereas
D.
which
【多选题】The sea waybill is one of the shipping documents used for sea transportation and serve as（ ）.
A.
cargo receipt
B.
document of title
C.
evidence of contract of cargo transportation
D.
negotiable document
【简答题】 文字工具组中哪些工具可以生成文字选区
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