混凝土墙面抹底层防水砂浆时，其稠度为7～8cm。( )
参考答案：对
We looked forward to _______ at eight in the morning, but he didn’t turn _______ until 9 o’clock..
A．his coming; up
B．his coming; in
C．he came; down
D．he came; in
粗纱牵伸工艺配置的原则是什么？
