据给水系统的压力状态划分，给水系统不包括( )。
A．低压给水系统
B．常高压给水系统
C．临时高压给水系统
D．临时低压给水系统
参考答案：D
钉洞固位形中钉洞的深度一般为（）
A.2mm
B.1.5mm
C.1mm
D.3mm
E.2.5mm
—Could you tell me _____?
—Certanily. In half an hour. [ ]
A. when will the high speed train arrive
B. when the high speed train will arrive
C. when would the high speed train arrive
D. when the high speed train would arrive
