公式dH=nCPdT只适用于理想气体的定压变温过程。
A. 对
B. 错
You are about to walk into a presentation that could get you a promotion if you do well. You feel very nervous. Which of the following is your BEST strategy?
A. Have just one drink, to relax
B. Have a large cup of coffee, to make yourself more alert.
C. Tell everyone that you are "very nervous."
D. Tell yourself that you are "ready to present, feeling very up and alert."
Which of the following is the BEST advice for handling questions after a presentation?
A. Nod your head to indicate that you understand each question as it's asked
B. If someone asks you about something you've already explained, say gently that you do not have time to repeat your remarks and go on to the next question.
C. Link your answers to points you made during your presentation
D. Say "That's a good question" to encourage people to ask more.
Asking the audience to participate in some way is not acceptable, because the audience should not have to do anything.
A. 对
B. 错
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