搜题请搜索小程序“爱下问搜题”
问题 单项选择题

用紫外线消毒病室，下列哪项是错误的______

A．卧床病人佩戴墨镜
B．病室应先做清洁工作
C．用酒精擦净灯管表面灰尘
D．灯亮后计时
E．照射30分钟

答案

参考答案：D

单项选择题

机车在运行途中若制动机突然失电，这时制动机将会产生的现象是（）。

A.自动保压

B.常用制动

C.失去制动能力
查看答案

一节历史课上，老师为同学们准备了四幅挂图，请仔细观察后回答问题：

请回答：（1）老师准备这几幅图片主要是为了向同学们讲述哪一方面的问题？                                                                                                                                                               （2）图一所示的运动结束后，农民拥有了对土地的使用权还是所有权？（注：“使用权”是指土地仍属    于国家，农民只能使用；“所有权”是指农民成为了土地的主人，土地成了农民自己的财产。）简述：     这一运动的有何历史意义？                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   （3）图二中农民积极入社，入的是什么“社”？这一运动和另外两大运动被称为社会主义“三大改

    造”，“三大改造”的基本完成，对我国社会产生了什么影响？

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                 

（4）四幅图中哪一幅所示非但没有促进农业生产力的发展，反而破坏了农业生产？ 

                                                                                                                                                               

（5）出现图四的结果是因为十一届三中全会后，我国在农村实行了什么制度？简单评价一下这一制度。

                                                                                                                                                               

                                                                                                                                                              

                                                                                                                                                               

查看答案