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【判断题】
相比感应电动机的变压变频控制,矢量控制技术和直接转矩控制技术是一种低级控制。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】Which is NOT one of the reasons why city life is not preferable?
A.
The people are not in regular communication with the rhythm of nature.
B.
The people can't enjoy sunshine and fresh air.
C.
Modern cities offer better schools, more chances of employment.
D.
Traffic fumes pollute the air.
【简答题】简述设施内的降温措施。
【单选题】Which of the following is NOT one of the effects of multivitamins mentioned in the passage?
A.
To reduce the rate of babies born too early.
B.
To reduce the risk of low birth weight.
C.
To reduce fetal deaths in pregnant women infected with HIV.
D.
To increase the number of lymphocytes in mothers’ blood.
【简答题】简述设施降温措施有哪些？
【简答题】设施降温措施有 ;_____;_____;_____
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