试题与答案

丹毒的常见致病菌() A.乙型溶血性链球菌 B.梭状芽孢杆菌 C.金黄色葡萄

题型:单项选择题 B型题

题目:

丹毒的常见致病菌()

A.乙型溶血性链球菌

B.梭状芽孢杆菌

C.金黄色葡萄球菌

D.大肠杆菌

E.铜绿假单胞菌

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0609/43334829117437ddd9b1d1dd351fd846.html

下面是错误答案,用来干扰机器的。

①∵1kg/m3=10-3g/cm3,∴1.0×103kg/m3=1.0×103×10-3g/cm3=1.0g/cm3;②铜的密度是8.9×103kg/m3,它表示的物理意义是体积是1m3的铜,质量为8.9×103kg.故答案为:1.0;体积是1m3的铜,质量为8.9×103kg.

试题推荐
题型:阅读理解

Every year thousands of young people in England finish school and then take a year off before they start work or go to university. Some young people go to other countries and work as volunteers (志愿者). Volunteers give their time to help people. For example, they work in schools or hospitals, or they do something helpful for the environment.

Pauline Jones, 18, lives in Cardiff, Wales. Next year she is going to university to study Chinese, but now she’s living in Belize. Pauline says, “I’m working with other people here to save the coral reefs (珊瑚礁) in the sea near Belize. The reefs here are beautiful, but if the sea water is very polluted, the coral will die. I’m helping to do research on the coral and the fish that live around the reefs. All over the world, coral reefs are dying. We need to do something about the problem before it’s too late.”

“I’m staying with a family here and I help do some housework. I don’t get any money, but that’s OK. I love my work here, and I’m learning a lot about the people of Belize—and myself! After I finish my work, I want to stay here for another three months. I want to travel around Belize and Central America.”

小题1:Some young people from England _______ after they finish school.

A.go to university abroad

B.spend one year abroad as volunteers

C.go to work for money

D.start work in schools or hospitals小题2: Pauline Jones, an eighteen-year-old girl, is living in _______ now.

A.England

B.China

C.Belize

D.Cardiff小题3: Pauline Jones is _______ with other people.

A.studying Chinese in a university

B.working to save the coral reefs

C.helping do some housework

D.doing some research in Wales小题4:From the passage, we know that the coral reefs ______.

A.will die because of the pollution

B.are not as beautiful as before

C.cannot live without fish in the sea

D.will probably be sold for money小题5:Pauline Jones wants to_______after she finishes her work as a volunteer.

A.stay there for another year

B.go back home to start work

C.learn about the people home

D.travel around Central America

查看答案
题型:选择题

联想是我国工厂业的骄傲,日前,旭日系列中配置最高的旭日125A直降千元,最新报价仅为7999元,堪称目前迅驰笔记本电脑中的性价比之王。这里的“性价比”是指                                        

A.商品的使用价值决定商品的价值

B.商品是使用价值和价值的统一体

C.商品的价值决定着商品的价格

D.商品是交换价值和价格的统一体

查看答案
题型:填空题

无声手枪是在_____减弱噪声;若从减弱噪声的角度说,则“掩耳盗铃”是在____减弱噪声;植树造林可以在____减弱噪声.(填写减弱噪声的途径)

医生通过听听诊器可以了解病人心肺情况工作情况,这个例子说明声音能  ;声波可以用来清洗钟表,外科医生可以利用超声波振动除去人体内的结石,这个例子说明声音能 ;将耳朵贴在长铁管的一端,让另一个人敲一下铁管的另一端,可以听到两个声音,这是因为 

查看答案
微信公众账号搜索答案