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【单选题】
盆腔炎的病原菌及传染途径，以下哪项正确A.
盆腔炎与性生活没关系
B.
盆腔感染的主要菌种是厌氧菌
C.
主要是需氧菌和厌氧菌的混合感染
D.
病原菌以血循环传播为主
E.
病原菌以沿生殖器粘膜上行蔓延为主
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皮皮学刷刷变学霸
举一反三
【单选题】Why does HIV epidemic in some of the new EU member states and their bordering countries keep growing?
A.
In these countries heroin injecting is more common.
B.
People in these countries are not always seeking treatment for cocaine-related problems.
C.
People in these countries like to use crack rather than heroin.
D.
These countries are poorer than their western neighbors and can not provide adequate healthcare.
【简答题】斯特林发动机的工作原理?