给排水施工图分（）二部分。
A、剖面、断面
B、平面图、系统图
C、粗、细
D、室内、室外给排水施工图
参考答案：D
_____you don’t lose heart, it will be easy for you to overcome the difficulties.
A．As well as
B．So long as
C．So far as
D．As soon as
