外观检测环境要求，湿度（）。 A.55%±15% B.75%±15% C.常温 D._爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

外观检测环境要求，湿度（）。

A.55%±15%

B.75%±15%

C.常温

D.以上均不是

答案

参考答案：A

选择题

Tomorrow would be Christmas Day, and she had only $1.87 .

A．with which to buy a present to Jim

B．by which to buy Jim a present

C．with which she could buy a present for Jim

D．in which to buy Jim a present

单项选择题

钢板试样切取应符合（）的有关规定。

A、GB2975

B、GB247

C、GB223

D、GB222