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【单选题】
被HBV阳性病人血液、体液污染的锐器刺伤，应注射乙肝疫苗的最高时限为( )A.
12小时内
B.
24小时内
C.
48小时内
D.
7日内
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反馈参考答案：
举一反三
【简答题】外源性致热原的特点，正确的是（ ）。
【简答题】论述渐伐的优缺点
【单选题】回答{TSE}题： Traffic in Uur Cities Tile volume of traffic in many cities in the world today continuesto expand．This causes many problems，including serious air pollution，lengthydelays，and the greater risk...
A.
of
B.
for
C.
about
D.
by
【简答题】In many cities of the developing countries, buses are occasionally so crowded that it is quite ______ to see buses running around with passenger hanging to their doors and windows.
【简答题】Why are there many rural workers who are trying to find jobs in the cities?
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