暖通工程管件图例中,为()。 A.浴盆排水件 B.正四通 C.斜四通 D.正三通 发布时间:2018-01-06 17:37 │ 来源:www.tikuol.com 题型:单项选择题 问题: 暖通工程管件图例中,为()。A.浴盆排水件B.正四通C.斜四通D.正三通
题型:单项选择题 — What were you doing at 8:00 pm last night? — I ______. [ ]A. slept B. sang C. were eating D. was sleeping 查看答案
题型:单项选择题 Some insects _____ the colour of their surroundings to protect themselves. [ ]A. take in B. take offC. take onD. take out 查看答案
题型:单项选择题 甲、乙二人分别从A、B两地同时相向而行,甲的速度是乙的1.5倍,二人相遇后继续行进,甲到B地、乙到A地后立即返回。已知二人第四次相遇的地点距离第三次相遇的地点20千米,那么A、B两地相距多少千米( )A.50B.40C.30D.25 查看答案