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问题
多项选择题
工资发放周期可以是（）。
A.周
B.季
C.月
D.任意
答案
参考答案：
A, B, C, D
选择题
It is said that another new railway bridge ____ over the Changjiang River at present.
A. has put up
B. is to put up
C. is being put up
D. is going to be put up
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判断题
闭式系统的喷头，其公称动作温度宜高于环境最高温度3O℃。（）
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