A: Hello, Judy, thank you for your waiting, _____________ ?B: Not bad, ______________?A: Good.
A. How are you, How do you do
B. How are you, How are you
C. How do you do, How do you do
D. How do you do, How are you
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We really value the chance to work with you. I do hope we can meetthe next timewhen I came back.
A. 对
B. 错
You price is a little high, hope we can work together in future.
A. 对
B. 错
PWM调制法，就是把希望输出的波形作为调制信号，把接受调制的信号作为载波，通过信号波的调制得到所期望的 PWM 波形。
A. 对
B. 错
Terrific, I'll be here on time. See you then.
A. 对
B. 错
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