Jim is a and he works in a restaurant. A

水位上升30cm记作+30cm，那么-16cm表示（    ）。

_____ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home. [ ]

A. To wait

B. Have waited

C. Having waited

D. To have waited

早期介入的规划设计阶段中，要贯彻可行性研究阶段所确定的物业管理总体规划的内容和思路，保证总体思路的（）。

A.一致性

B.连贯性

C.持续性

D.综合性

E.规范性

嫌气分解 anaerobic decomposition

详细说明外墙外保温体系的质量要求有哪几项？