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【简答题】
三相四线电路的总电能等于各项电路电能( )。
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反馈参考答案：
举一反三
【单选题】How to keep healthy?
A.
Adults should get about two hours of aerobic exercise each week.
B.
Adults can do the exercises such as playing basketball, swimming and distance running.
C.
Lifting weights, or doing sit-ups and push-ups are permitted.
D.
All of the above are right.
【单选题】In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A), B), C), and D). 25. Last year ...
A.
worse
B.
shorter
C.
younger
D.
slower
【单选题】How to keep healthy physically?
A.
Do not smoke and drink alcohol.
B.
Do regular exercise and have a balanced diet.
C.
Do more walking, running and swimming.
D.
Eat less fat, oil, sweets and more nutritious food.
【单选题】听力原文： Consumers put away their wallets in June, sending retail sales plunging by the sharpest amount in nearly two years. Sales of autos, furniture and building supplies all fell, highlighting the eco...
A.
Retail increase.
B.
Retail slump.
C.
Rises in prices.
D.
Economic recession.
【单选题】His health______, my father retired from the business last year.
A.
fails
B.
was failed
C.
failing
D.
failed
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