搜题请搜索小程序“爱下问搜题”
问题 单项选择题

智能油水界面测量仪是根据的（）测量原理，针对油水介面动态测量。

A.电磁感应加热技术

B.电磁感应辐射技术

C.电磁感应传感技术

D.电磁感应物理技术

答案

参考答案：C

选择题

The great invention he made ___ of great benefit to the whole world.[ ]

A. is proved                    

B. has proved  

C. has been proved              

D. is proved to be

查看答案
选择题

It was not until midnight_______they reached the small village.    [ ]

A. that        

B. when       

C. while        

D. after
查看答案