一圆盘可绕通过圆盘中心O且垂直于盘面的竖直轴转动。在圆盘上放置一小木块A,它随圆盘一起做匀速圆周运动如图,则关于木块A的受力,下列说法正确的是( )
Have you heard about Zhangjiajie Glass Footbridge?
Of course, it's built over a canyon in the Zhangjiajie National Forest Park.( )
A.300﹣meter﹣deepB.300﹣meters﹣deep
C.300 meter deepD.300﹣meters deep
How amazing this robot is!
Wow, it has video cameras in its eyes, so it "see" and interact with people.( )
A.mayB.canC.mustD.should
I'm sorry I took your school uniform by mistake. But where is ?
Don't worry. Let me help you find it.( )
A.heB.hisC.mineD.yours
Zanco, American tech company, made tiniest phone in the world﹣the Tiny 11.( )
A.the; aB.an; /C./; aD.an; the
He explained again and again in order to make what he did .( )
A.understandB.understood
C.to understandD.understanding