In the near future, more advances in the_爱下问搜题

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问题选择题

In the near future, more advances in the robot technology _____ by scientists.

A. are making
B. are made
C. will make
D. will be made

答案

答案：D

选择题

The little boy won't go to sleep __ her mother tells a story. [ ]

A. or

B. until

C. but

D. whether

多项选择题

API610中介绍了（）等几种典型的机械密封布置。

A.干气密封

B.单密封

C.串级密封

D.双密封