The main idea of the third paragraph is that _______.
A.New York State is the biggest state in the United States
B.New York State has the most beautiful buildings
C.not every state of the United States attracts Chinese students
D.New York State has the most Chinese in the United States
第3题
A.牵引电动机通风
B.列车供电柜通风
C.空气压缩机通风
D.机械间通风
第4题
A.主变压器
B.主电路
C.控制电路
第8题
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