题目内容
在正互作时， 从各因素的最佳水平推论最优组合，估计值要偏高些，但仍有应用价值。
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在负互作时， 从各因素的最佳水平推论最优组合，估计值要偏高些，且要根据互作的大小来判断其应用价值。
何谓比较试验的“唯一差异”原则？举例说明如何应用比较间的唯一差异原则，以便正确地析出试验因素的效应？
Task 1. Understanding a Movie Dialog and fill in the blanks according to what you hear.[音频]Secretary: Natalie's on Line One.Adam: What's up, honey? You look 1)__________.Natalie: Oh, Adam, I just talked to the vet and made them… they had to put Oliver to sleep.Adam: What? He wan't even that 2)______________.Natalie: Oh, I know. But apparently he had some kind of, I don't know… highly infectiouscanine virus or something. And , and they had to put him down. It's the 3) ______________.Adam: Oliver was licking Clara's face this morning.Natalie: Don't worry, because I asked the same thing, and the virus is 4) _______ to humans. Soum… So she's fine.Adam: This is going to 5) _____ her heart, and you know that.Natalie: No, it won't . I want you to go down to RePet… and get Oliver 6) ________.Adam: I'm not going to have some freak of science sleep in my daughter's bed.Natalie: Oh, Adam, for heaven's sake. It's not dangerous.Adam: No, yes, no, no. Oliver can live on in our 7)_____.Natalie: She's only eight. She won't understand that, honey.Adam: Look, it's the 8)______ process of life. You're born, you live and you die. She has to learnabout it some day.Natalie: Yeah, but she doesn't have to learn about it on your 9)____ . It's hard …Adam: I really 10)____ that, honey.Natalie: Will you do it?Adam: No.Natalie: Thank you, darling. And Clara thanks you too. I love you. Bye, bye.Adam: But I won't do it. No, no, no, listen. Natalie, I just won't…
单相半波整流电路中，阻性负载，晶闸管的控制角是60°,其导通角是____。
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