单选题：What is true of microwaves?

题目分类：理工类
题目类型：单选题
查看权限：VIP

题目内容：

What is true of microwaves? A．Their wavelengths are shorter than those of visible light.
B．Their wavelengths are longer than those of visible light.
C．They are different from visible light as they are a kind of radiant energy.
D．They are visible to the human eye.

参考答案：

答案解析：

What is the most important feature of the backpack invented

What is the most important feature of the backpack invented byLawrence C.Romeand

分类：理工类题型：单选题

Why can't you stop your eternal complaining .9

Why can't you stop your eternal complaining .9A．everlasting B．long C．temporary D

分类：理工类题型：单选题

Without question, people's lives in China have improved dram

Without question, people's lives in China have improved dramatically in the past

分类：理工类题型：单选题

Senator James Meeks has called off a boycott of Chicago Publ

Senator James Meeks has called off a boycott of Chicago Public Schools, organize

分类：理工类题型：单选题

第50题__________

第50题__________A．But this advantage also has a big drawback--up to 10% of the bi

分类：理工类题型：单选题