根据《倒置式屋面工程技术规程》4.3.1.4要求,倒置式屋面保温材料体积吸水率不应大于()%。
A.1
B.2
C.3
D.5
参考答案:C
一 Why did Miss Wang look so worried when I saw her?
- Because she wanted to know .[ ]
A. where did the other students go
B. when would the policeman come
C. what her students have done during the trip
D. if her students had survived in the earthquake
如果经过认真寻找仍然找不到走失者时,导游应立即报案。( )