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【判断题】
在三相交流电路中,负载为三角形接法时,其相电压等于三相电源的线电压。 A. 对 B. 错A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】举实例说明版面的组合与分立。
【简答题】请结合实例论述同题组合稿件确定主题的思路。
【单选题】We learn from the Pew Research Center that one third of American adult children______.
A.
have parents with no savings and pensions
B.
ignore the emotional needs of their parents
C.
can't afford the daily and medical expenses
D.
spend their own money on their parents' care
【单选题】No decision _ about any future plan until we have done some research into the student preference．
A.
has been made
B.
is made
C.
is being made
D.
will be made
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