搜题请搜索小程序“爱下问搜题”
问题 选择题

近期我市出现较多的“手足口病”病例，市儿童医院设置“手足口病”专区，不让患者随意离开，这些患者属于（　　）

A．病原体

B．传染源

C．传播途径

D．易感人群

答案

传染病流行的基本环节有传染源、传播途径和易感人群．传染源指的是能够散播病原体的人或动物，此题中患有手足口病的儿童属于传染源．

故选：B

改错题

第二节书法展示（满分5分）

请抄写下面的文章，注意本题是按照书法的好坏评分的，格式要求与原文一致。

建议：先在草稿纸上练习，找找手感，再答卷。

My Hometown

Welcome to my hometown which is located on the Bohai Bay．It is very beautiful! Living here makes you feel quite good．Miles of beaches stretch along the coast．You can lie on the beach, bathing in the sun and enjoying the fresh air．The blue sky and beautiful scenery here will make you relaxed and excited.

People here are very friendly and considerate．They are ready to offer help to people from the country and abroad．There are plenty of tidy hotels and inns for visitors to stay in．Most importantly, you can enjoy all kinds of tasty special foods．I am sure you will have a good time here．

（请在答题卡的指定位置作答）
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单项选择题

当离心式压缩机的实际流量（）喘振流量时发生喘振。

A、等于

B、小于

C、大于
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