给水管网布置要点为（）。
A、干管应靠近主要供水点
B、干管应靠近调节设备
C、干管宜随地形起伏敷设
D、干管尽量不埋设于绿地下
参考答案：A, B, C
The couple offered to ________ my house while I was on holiday in Hawaii, which was really kind of them..
A．look over
B．take over
C．hand over
D．watch over
胃癌最好发的部位是
A．胃底
B．贲门
C．胃窦
D．大弯侧
E．胃体
