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