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问题 单项选择题

医院后勤供应的污染可导致交叉感染，体现了管理的( )

A．发展观
B．度和量变、质变观
C．普遍联系观
D．对立统一观

答案

参考答案：C

选择题
She said, "There are twenty boys in my class."   
She said that ______.

A. there were twenty boys in my class
B. there were twenty boys in her class
C. there are twenty boys in her class
D. there are twenty boys in my class
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单项选择题

没有数据来源，且可以用来显示信息、线条、矩形或图像的控件的类型是( )。

A) 结合型
B) 非结合型
C) 计算型
D) 非计算型
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