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【单选题】
心酮胺是治疗冠心病的药物。它具有如下结构: 下列关于心酮胺的描述,错误的是 [     ]
A.
可以在催化剂作用下和溴反应
B.
可以在碱性条件下发生水解反应
C.
能够使酸性高锰酸钾溶液褪色
D.
可以和浓硫酸与浓硝酸的混合液反应
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【单选题】¿Con qué religión tiene que ver el nombre de la fiesta de Yuanxiao?
A.
El budismo.
B.
El taoísmo.
C.
El confucianismo.
D.
【单选题】—You were injured in the accident, weren't you? —______. [     ]
A.
Yes, I was
B.
Yes, I wasn't
C.
No, I was
【判断题】Any fluid can be compressed when extremely large pressure is applied.
A.
正确
B.
错误
【判断题】Air, water, refrigerant or any other fluid can flow through a thermal distribution system
A.
正确
B.
错误
【单选题】Soon after the PRC was set up, a new law was passed which _______ people’s freedom of speech, religion and demonstration.
A.
announced
B.
guaranteed
C.
kept
D.
prevented
【单选题】Different from popular _____, most good leaders are made, not born. [     ]
A.
belief
B.
agreement
C.
religion
D.
decision
【单选题】关于力对点之矩的说法,( )是错误的。
A.
力对点之矩与力的大小有关,而与力的方向无关
B.
力对点之矩不会因为力矢沿其作用线移动而改变
C.
力的数值为零、或力的作用线通过矩心时,力矩均为零
D.
互相平衡的两个力,对同一点之矩的代数和等于零
【单选题】The amount of fluid delivered by a centrifugal pump can be regulated by _____.
A.
throttling the pressure line
B.
changing the speed of the rotor
C.
either A or B
D.
None of the above is tree
【简答题】The leaves of evergreens can survive the winter because they are ______and fluid inside their cells contains cold-resisting substances.
【判断题】We can check transmission fluid any time.
A.
正确
B.
错误
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