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【单选题】
关于力偶系的平衡条件，以下表述错误的是
A.
力偶系的多边形自行闭合
B.
各力偶之矢量和为零
C.
各力偶在任一轴上投影之代数和为零
D.
合力偶的矩不一定为零
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举一反三
【单选题】frown
A.
vt.供应，提供；装备
B.
vi.冻；结冻vt.使结冰
C.
vi.皱眉，蹙额
D.
vt.履行；满足；完成
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【简答题】同义句转换。 1. To eat a balanced diet is very important. _____ very important _____ eat a balanced diet. 2. They are watching TV at home now. They are watching TV at home _____. 3. What's wrong with your s...
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【单选题】A _____ diet is very important us. [     ]
A.
balance; for
B.
balanced; to
C.
balancing; of
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【单选题】frighten
A.
vt.原谅,饶恕,宽恕
B.
vi.皱眉,蹙额
C.
vt.使惊恐,吓唬
D.
vt.忘记,遗忘
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【单选题】forget
A.
vi.皱眉,蹙额
B.
vt.使惊恐,吓唬
C.
vt.原谅,饶恕
D.
vt.忘记,遗忘
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【简答题】Although ______ is very crucial, the efforts that the government promotes a healthy diet have failed.
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【单选题】freeze
A.
vi.皱眉,蹙额
B.
vt.创立,创办;建立
C.
vt.履行;满足;完成
D.
vi.冻;结冻vt.使结冰
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【判断题】ppp是在音乐中标示极弱
A.
正确
B.
错误
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【简答题】进水管口在进水池水面以下的深度称为( )
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【简答题】A．A very restrictive diet eating only salads. B．A moderate diet emphasizing careful eating habits. C．A very mild diet with lots of sweets. D．A strict diet eating only once a day.
查看完整题目与答案
相关题目：
【单选题】frown
A.
vt.供应，提供；装备
B.
vi.冻；结冻vt.使结冰
C.
vi.皱眉，蹙额
D.
vt.履行；满足；完成
查看完整题目与答案
【简答题】同义句转换。 1. To eat a balanced diet is very important. _____ very important _____ eat a balanced diet. 2. They are watching TV at home now. They are watching TV at home _____. 3. What's wrong with your s...
查看完整题目与答案
【单选题】A _____ diet is very important us. [     ]
A.
balance; for
B.
balanced; to
C.
balancing; of
查看完整题目与答案
【单选题】frighten
A.
vt.原谅,饶恕,宽恕
B.
vi.皱眉,蹙额
C.
vt.使惊恐,吓唬
D.
vt.忘记,遗忘
查看完整题目与答案
【单选题】forget
A.
vi.皱眉,蹙额
B.
vt.使惊恐,吓唬
C.
vt.原谅,饶恕
D.
vt.忘记,遗忘
查看完整题目与答案
【简答题】Although ______ is very crucial, the efforts that the government promotes a healthy diet have failed.
查看完整题目与答案
【单选题】freeze
A.
vi.皱眉,蹙额
B.
vt.创立,创办;建立
C.
vt.履行;满足;完成
D.
vi.冻;结冻vt.使结冰
查看完整题目与答案
【判断题】ppp是在音乐中标示极弱
A.
正确
B.
错误
查看完整题目与答案
【简答题】进水管口在进水池水面以下的深度称为( )
查看完整题目与答案
【简答题】A．A very restrictive diet eating only salads. B．A moderate diet emphasizing careful eating habits. C．A very mild diet with lots of sweets. D．A strict diet eating only once a day.
查看完整题目与答案