| 男性，25岁。囚车祸撞伤腹部，病人诉腹痛难忍，伴恶心、呕吐。X线腹透，见膈下游离气体，拟诊为胃肠道外伤性穿孔。 |
| If it were only necessary to decide
whether to teach elementary science to everyone on a mass basis or to find the
gifted few and take them as far as they can go, our task would be fairly simple.
The public school system, however, has no such choice, for the two jobs must be
carried on at the same time. Because we depend so heavily upon science and
technology for our progress, we must produce specialists in many fields. Because
we live in a democratic nation, whose citizens make the policies for the
nation, large numbers of us must be educated to understand, to support, and when
necessary, to judge the work of experts. The public school must educate both
producers and users of scientific services. In education there should be a good balance among the branches of knowledge that contribute to effective thinking and wise judgement. A. the current public school system is too complicated to be understood B. the public school system has no choice of what to teach C. it is difficult to decide whether elementary science should be taught in public schools D. the educators should take care of both ordinary and gifted students [填空题]环氧树脂性能指标（），环氧当量。
[多选题]破拆器材是消防员在灭火救援条件中，为完成灭火救人排险等任务的器具和装备，大体分为（）大类
A.手工破拆工具 B.机械破拆工具； C.动力破拆工具； D.化学破拆工具 E. 电动破拆工具 [单项选择]进行疾病三间分布综合描述的典型是
A. 传染病流行病 B. 血清流行病学 C. 移民流行病学 D. 分子流行病学 E. 遗传流行病学 我来回答: 提交
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