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【判断题】
在低频时,变频器必须进行转矩补偿,以改变低频转矩特性。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】A:That may be true. But it would be good for you to relax a little, too. Aren't you working too hard?
A.
Great, thanks.
B.
What time are you going?
C.
I'm going to finish the PowerPoint for tomorrow's presentation.
D.
Well, yes. But I think I can make it better.
E.
Thanks for the invitation. I'll work on the presentation until eight and then join you for dinner.
F.
It's kind of you to ask but I don't think so. I love my job!
【单选题】关于义齿基托树脂，下列描述错误的是
A.
自凝树脂可用于制作腭护板
B.
自凝树脂的机械性能整体上不如热凝树脂
C.
冬天为加快热凝树脂面团期的形成，可将调和物放在火焰上加热
D.
自凝树脂调和后，一般在糊状期塑形
E.
自凝树脂残余单体量较热凝树脂高
【单选题】义齿基托树脂下列描述错误的是
A.
自凝树脂可用于制作腭护板
B.
冬天为加快热凝树脂面团期的形成，可将调和物放在火焰上加热
C.
自凝树脂的机械性能整体上不如热凝树脂
D.
自凝树脂调和后，一般在糊状期塑形
E.
自凝树脂残余单体量较热凝树脂高
【单选题】下列关于义齿基托树脂的描述，不正确的是
A.
自凝树脂可用于制作腭护板
B.
自凝树脂的机械性能整体上下不如热凝树脂
C.
冬天为加快热凝树脂面团期的形成，可将调和物放在火焰上加热
D.
自凝树脂调和后，一般在糊状期塑形
E.
自凝树脂残余单体量较热凝树脂高
【单选题】It's hard to relax _____ when you have a busy work life.
A.
you
B.
your
C.
yours
D.
yourself
【单选题】听力原文：W: It's so hot today. I was going to wash the car and water the plants, but now I am not sure I should. M: I agree. You should relax in heat like this. Too much hard work could cause you to feel ...
A.
Water the plants.
B.
Wash the car.
C.
Do nothing.
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