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【单选题】
为了调查某学校学生的购书费用支出从全校抽取4个班级学生进行调查,种调查是A.
简单随机抽样
B.
系统抽样
C.
分层抽样
D.
整群抽样
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反馈参考答案：
举一反三
【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.
【判断题】If a breach of contract by a party is non-fundamental, then the injured party shall have the right to cancel the contract. ( )
A.
正确
B.
错误
【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
【简答题】novelty
【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】He injured his leg and ______ couldn’t play in the game.
A.
therefore
B.
however
C.
in which case
D.
in this way
【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
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