石英为三方晶系，故出现的星光效应为（）星光A.三射 B.六射 C.四射_爱下问搜题

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问题单项选择题

石英为三方晶系，故出现的星光效应为（）星光

A.三射

B.六射

C.四射

答案

参考答案：B

选择题

—I want to buy _______ bananas, but I don't have any money with me. Can you lend me _______?

—Sorry, I don't have _______, either. [ ]

A. some; any; any

B. some; some; any 

C. any; any; any

D. any; any; some

单项选择题

现代飞机上，无线电高度表的工作频为：（）.

A.4300KHZ

B.4300MHZ

C.1090MHZ

D.9370MHZ