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【判断题】
异步电动机的电磁转矩有两种表达形式,一是电磁功率与同步磁场机械角速度的比值,二为机械总功率与转子机械角速度的比值。( )A.
正确
B.
错误
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【简答题】If you take a fixed instant (i.e. the present) as your
point of observation / study, you are doing a ______ description of language;
if you study language through the course of its history, you are a ...
【单选题】听力原文：Narrator Listen to part of a discussion in a linguistics class. Professor Well, today I think wed talk about whether animals besides humans also have language. You see, what makes humans differen...
A.
How bees communicate with each other through dancing.
B.
How monkeys use sign language to communicate.
C.
Whether other animals besides humans have language.
D.
How human communication differs from animal communication.
【简答题】根据煤层的间距不同,采区式准备方式有 和 。
【判断题】Modern linguistics, i.e., linguistic study carried out in the 20th century, is mostly prescriptive.
A.
正确
B.
错误
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