单项选择题
排水管渠有( )和( )之分。
问答题排水管渠有( )和( )之分。
为残疾人设扶手的规定,下列哪一条要求过分了?( )A.扶手高度为0.90mB.扶手宜保持连贯C.起点、终点应...
单项选择题为残疾人设扶手的规定,下列哪一条要求过分了?( )
The teacher asked all the students in the class to keep...
单项选择题The teacher asked all the students in the class to keep their eyes_________for a minute.