____, Mother will wait for him to have dinner together.
A. However late is he
B. However he is late
C. However is he late
D. However late he is
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____ hot is the sun that we cannot go out at present.
A. Very
B. Too
C. So
D. Such
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℃