A公司2006年获得一项外观设计专利。B公司未经A公司许可，以生产经营为目的制造该专

书面表达： Life is just like a mirror（镜子） , you smile at it , and it smiles at you ,too.请以“Learn to smile ”为题写一篇文章

提示：1，学会对自己微笑

2， 学会对他人微笑

3， 微笑是一种语言

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My cousin is the______ of my uncle and my aunt.    [ ]

A. brother    

B. sister    

C. son    

D. father

—Did you have a chat with Tom?

—No, I was trying to ________ an opportunity to do so, but I couldn't.

A．hold

B．ask

C．seize

D．make

飞机在地面时，两边的QNH调定不一致，导致PFD上显示不同的修正气压高度，当两便高度差超过（）英尺时，ECAM上将显示BAROREFDISCREPANCY（气压基准差异）？

A、200英尺

B、300英尺

C、500英尺