试题与答案

热力设备及管道保温用的材料多为( )。A.有机材料 B.无机绝热材料 C.有机绝热材

题型:单项选择题

题目:

热力设备及管道保温用的材料多为( )。

A.有机材料

B.无机绝热材料

C.有机绝热材料

D.无机材料

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析:数据库管理员可以管理数据库应用系统、数据库管理系统、操作系统。

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