外国旅游者入境的有效证件包括()。
A.护照
B.出入境通行证
C.旅行证
D.签证
E.居留证
参考答案:A, C, D
– Jenny , how was your trip to Beijing ?
- Oh , I missed it . I wish I ________ my vacation there .
A.am spending
B.will spend
C.have spent
D.had spent
DL/T5210.3-2009《电力建设施工质量验收及评价规程第3部分:汽轮发电机组》汽轮机本体保温厚度偏差为多少?