腹腔穿刺液中有大量中性粒细胞，无细菌。常见于（） A.原发性腹膜炎 B.胃、十二指肠

Last weekend I went to the Summer Palace as usually. At about noon, I was enjoying my reading near a lake while suddenly I hear someone crying for help. I went up to see what was happening. I was shocking to find a little child struggling in the water in the distance while many people standing by without doing anything. Without any hesitation, I had pushed through the crowd and I took off my coat, but jumped into the water quickly. I managed to reach him and carried him back to safety. To his great relief, the kid was saved.

I was proud what I had done. I wish everyone can give hand when someone else is in need.

下 * * 种感染过程最常见的是

A．病原体被清除

B．隐性感染

C．显性感染

D．病原携带状态

E．潜伏性感染

校对一份书稿，编辑甲每天的工作效率等于编辑乙、丙每天工作效率之和，丙的工作效率相当于甲、乙每天工作效率之和的。如果三人一起校对只需6天就可完成。现在如果让乙一人单独校对这份书稿，则需要（）天才能完成。

A．20

B．16

C．24

D．18

主控项目、一般项目规定了检验方法，同时对涉及（）等以及强制性条文作出规定，要求必须严格遵照执行。

A.财产安全、人民健康、环境保护

B.财产安全、人民健康、运行

C.财产安全、人民健康、收益

D.财产安全、运行、收益

GPS时间信号正常工作时，该信号将作为母钟的时间基准。