If you are forced to abandon ship in a lifeboat,you should().
A. remain in the immediate vicinity
B. head for the nearest land
C. head for the closest sea-lanes
D. vote on what to do,so all hands will have a part in the decisio
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各级公路超高横坡度的最小值是()。
A. 1.5%
B. 2%
C. 3%
D. 路拱横坡度
以下哪类药物不适合做成缓释、控释制剂()。
A. 降压药
B. 抗生素
C. 抗哮喘药
D. 解热镇痛药