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【简答题】
一物体同时参与同一直线上的两个简谐振动,其分震动的表分别为: 则合成运动的振幅为______m.
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反馈参考答案：
举一反三
【单选题】When you are meeting your coworkers Normally , HR manager or head of office will introduce and welcome you. Which of the following introduction speech is not appropriate ?
A.
It's my pleasure to extend a cheerful welcome to you all.
B.
On behalf of my colleagues , I wish you all a convivial welcome.
C.
Hello , how are you doing today ?
D.
Luckily the weather has aligned with our wishes . The sun and bid you a warm welcome.
【判断题】As a tour guide, you needn 't carry Welcome Board and anything else about the guests when you are meeting them.
A.
正确
B.
错误
【单选题】When you are meeting your coworkers. Normally, HR manager or head of office will introduce and welcome you. Which of the following introduction speech is not appropriate?
A.
Luckily the weather has aligned with our wishes. The sun and I bid you a warm welcome.
B.
It's my pleasure to extend a cheerful welcome to you all!
C.
Hello, how are you doing today？
D.
On behalf of my colleagues, I wish you all a convivial welcome.
【简答题】What should you confirm when you are meeting your guest at the airport?
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