____ hot is the sun that we cannot go out at present.
A. Very
B. Too
C. So
D. Such
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Only when the rain stopped ____ again.
A. the match started
B. does the match start
C. did the match start
D. the match had started
移动通信工程勘察可分为哪两阶段?
A. 网络规划现场勘察,工程设计现场勘察
B. 室内场地,室外场地
C. 天气环境,地理环境
D. 地形环境,交通环境
机房温度要控制在多少度?
A. -10℃~+55℃
B. -0℃~+55℃
C. -15℃~+30℃
D. -10℃~+25℃
各机房之间相通的孔洞、布设缆线的通道应尽量封闭。
A. 对
B. 错