出入境船舶的船方或其代理人应当在船舶预计抵达口岸的( )前向入境口岸检验检疫机构申报。
A．6小时
B．12小时
C．24小时
D．48小时
参考答案：C
根据汉语提示完成句子。
1. This box is ______ (正方形).
2. I want to give him a _____ (惊喜) today.
3. Can you ______ (数) these trees?
4. Which ______ (季节) do you like best?
5. We all ______ (穿) school uniform to go to school?
6. I like ______ (美味的) food.
7. I'm ______ (恐怕) you can't.
8. Tomorrow is February the ______ (八日).
9. We had a______ (令人惊喜的) party.
10. This is a ______ (充满希望) season.
心房颤动的f波频率为（）
A.100～200次／分
B.60～100次／分
C.300～500次／分
D.250～350次／分
E.350～600次／分
