排水工程中的土沟边坡应贴坡平整。( )
参考答案：错
解析： 排水工程中的土沟边坡不许贴坡。
She didn't ask her boyfriend to buy her a car. ____________, she bought one for him. [ ]
A. That is
B. On the contrary
C. To be honest
D. Generally speaking
阀门在安装前应作何检查？
y speaking