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【判断题】
作用在刚体上某点的力F,可以平行移动到任一点,但必须同时附加一个力偶。其力偶矩大小等于原来的力F对平移点之矩,即平移后的力F同附加力偶一起与原力系等效。A.
正确
B.
错误
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知识点：
皮皮学刷刷变学霸
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【简答题】目前城市大气质量监测报告中通常提到的污染物种类有 。A. 总悬浮粒子数 B. 二氧化硫，氮氧化物 C. A.B都对 D. A.B 都错
【单选题】The fishing boat was on the beach.
A.
hanging about
B.
hanging on
C.
hanging up
D.
hanging back
【单选题】On the sea near Diaoyu Island, ____ Chinese fishing boat was stopped by the Japanese and ___ sailors were arrested illegally. [ ]
A.
a; the
B.
the; the
C.
a; 不填
D.
the; 不填
【简答题】组织市场可分为以下四种类型:_______、机构组织、______、______。
【简答题】A.Nobody B.None C.Not all D.Not everyone
【单选题】Choose the best answer to complete each sentence. 3. The fishing boat was ___________ on the beach.
A.
hanging about
B.
hanging on
C.
hanging up
D.
hanging back
相关题目：
【单选题】The fishing boat was on the beach.
A.
hanging about
B.
hanging on
C.
hanging up
D.
hanging back