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【单选题】
下述与直流电动机反馈闭环调速系统的临界放大系数无关的参数是()
A.
电枢回路电阻
B.
电力拖动系统的转动惯量
C.
电力电子变换器的开关频率
D.
给定电压
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【简答题】变压器的损耗有铁损耗和( )。
【多选题】“Nature does not hurry, yet everything is accomplished” — Lao Tzu If you are in a city where everyone rushes, realize that you don’t have to be like everyone else. You can be different. You can walk i...
A.
. Start to put off or cancel the unnecessary.
B.
. Meetings are usually a “big waste of time”.
C.
. The world likely won’t end if you don’t pass one of the examinations.
D.
. But here are some things to consider and perhaps adopt, if they work for your life. E. Remember the quote: if nature can get everything done without rushing, so can you. F. Pick 2-3 important things — or even just one important thing — and work on those first. G. Give yourself more time to get ready and get there.
【单选题】--- Can you believe I had to pay 50 yuan for a haircut? -----You should try the barber’s I go. It’s only 10.
A.
as
B.
which
C.
where
D.
that
【判断题】模式是相对稳定的,而实例是相对变动的。
A.
正确
B.
错误
【判断题】模式是相对稳定的,而实例是相对变动的。
A.
正确
B.
错误
【多选题】关于东北地区范围的叙述不正确的是()
A.
包括黑、吉、辽三省
B.
包括黑吉辽三省以及内蒙古自治区东部
C.
包括黑吉辽三省以及内蒙古自治区东部和山西北部
D.
指大西安岭以东地区
【判断题】模式是相对稳定的,实例随数据库中的数据的更新而变动。
A.
正确
B.
错误
【判断题】模式是相对很稳定的,而实例是相对变动的。
A.
正确
B.
错误
【单选题】Where can I try this on, please?
A.
What size are you?
B.
The fitting room is over there.
C.
I’ll take it.
D.
I'm sorry. We have vanilla and strawberry. Would you like them?
【单选题】Where can you practice phone English?
A.
I can call English businesses when they are closed and try to listen to their answering machines.
B.
I can practice with my friends who are learning English by calling them on the phone.
C.
If I live in an English speaking country, I can practice with telemarketers when they call to sell something. (I won't actually buy the product, just practice my English)
D.
All of the above are great ways to practice.
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