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【单选题】
下列结论中正确的是( )A.
凡负载作星形连接时，必须有中线。
B.
凡负载作星形接法时，线电流一定等于相电流。
C.
负载作三角形连接时，负载的相电压等于电源的相电压。
D.
当三相负载越接近对称时，中性线电流越小。
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反馈参考答案：
举一反三
【简答题】对于任何共享类别,都可以使用预览窗口下方的修整标记,并启用 复选框,从项目的某部分,而非整个项目,创建视频。
【简答题】Listen and complete the notes with NO MORE THAN THREE WORDS . Biofuels - Two types: (1) Ethanol: - used in ordinary 1._______. - come from crops, plants such as 2._______ and grains (2) Biodiesel: - c...
【单选题】There are notes from years ago _____________ to the walls.
A.
poured
B.
taped
C.
pecked
D.
raced
【简答题】Notes from the marketing managers 1 Displays of fruit, vegetables and flowers just inside a store are common. They give customers a feeling of healthy living before they reach the other ordinary items...
【简答题】I d__________( 倾倒 ) the contents onto the floor. There are old family photographs, letters, greeting cards, and love notes from us to her.
【简答题】I __________ the contents onto the floor. There are old family photographs, letters, greeting cards, and love notes from us to her.
【单选题】A 52-year-old man notes nausea with abdominal dis- comfort after meals. On physical examination, there are no abnormal findings. Upper endoscopy is performed, and there are three ovoid nodules in the ...
A.
Antibiotics
B.
Chemotherapy
C.
Corticosteroids
D.
Multivitamins
E.
Total gastrectomy
F.
Vagotomy
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