入境的集装箱、货物、废旧物品在到达口岸时,必须向检验检疫机构报检并接受检疫,经检疫或实施消毒、除鼠、除虫或其他必要的卫生处理合格的,方准入境。 ( )
参考答案:对
Choose the words and finish the paragraph.
(从方框中选择合适的句子,将序号填在相应的横线上)
A. Thanks. Goodbye.
B. I'm sorry. He is not in.
C. No, you can't.
D. Yes, please.
E. Please tell him that I want to borrow his history book.
F. Can you remind (提醒) him to bring the book to school tomorrow?
G. Not at all.
Tom: Hello, this is Tom speaking. Is David at home?
Sally: 1
Tom: It doesn't matter. I will call later.
Sally: Can I take a message?
Tom: 2
Sally: What's the message?
Tom: _ 3
Sally: OK, I will tell him.
Tom: _ 4
Sally: Sure.
Tom: _ 5
Sally: Goodbye.
下列荷载图中,哪种能引起B支座的最大负弯矩()
A.A
B.B
C.C
D.D