首页 > 公共课

网友您好，请在下方输入框内输入要搜索的题目：

请输入或粘贴题目内容搜题

搜题

拍照、语音搜题，请扫码下载APP

题目内容（请给出正确答案）

[单选题]

Mike is better than Peter ()swimming.

A.for

B.at

C.on

D.in

答案

查看答案

发布时间：2022-12-02

更多“Mike is better than Peter ()swimming.”相关的问题

第1题

The instruments of the older factory ____________.

A.is as good or better than the new one

B.are as good or better than the new one

C.is as good as or better than those of the new one

D.are as good as or better than those of the new one

点击查看答案

第2题

以下是一些C#中的枚举型的定义，其中错误的用法有()

A.public enum var1{ Mike = 100, Nike = 102, Jike }

B.public enum var1{ Mike = 100, Nike, Jike }

C.public enum var1{ Mike=-1 , Nike, Jike }

D.public enum var1{ Mike , Nike , Jike }

点击查看答案

第3题

2016年大学生物专业英语期末考试英文短文3翻译答案

将英语短文译为中文

3 Self-Powered Nanotech (10分)

Nanosize machines need still tinier power plants

By Zhong Lin Wang

The watchmaker in the 1920s who devised the self-winding wristwatch was on to a great idea: mechanically harvesting energy from the wearer’s moving arm and putting it to work rewinding the watch spring.

Today we are beginning to create extremely small energy harvesters that can supply electrical power to the tiny world of nanoscale devices, where things are measured in billionths of a meter. We call these power plants nanogenerators. The ability to make power on a minuscule scale allows us to think of implantable biosensors that can continuously monitor a patient’s blood glucose level, or autonomous strain sensors for structures such as bridges, or environmental sensors for detecting toxins — all running without the need for replacement batteries. Energy sources are desperately needed for nanorobotics, microelectromechanical systems (MEMS), homeland security and even portable personal electronics. It is hard to imagine all the uses such infinitesimal generators may eventually find.

In Brief

★Nanotechnology has huge potential — but those minuscule devices will need a power source that is better than a battery.

★ Waste energy, in the form. of vibrations or even the human pulse, could provide sufficient power to run such tiny gadgets.

★ Arrays of piezoelectric nanowires could capture and transmit that waste energy to nanodevices.

★ Medical devices will likely be a major application. A pacemaker’s battery could be charged so it would not need replacing, or implanted wireless nanosensors could monitor blood glucose for diabetics.

点击查看答案

第4题

“You don’t prefer to have a meal out, do you?” “No, ______ have a meal out.”

A.I would rather not

B.I would better not

C.I had not better

D.I had better not to

点击查看答案

第5题

You’d better stay here because it is raining.()

You’d better stay here because it is raining.（)

A.正确