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【单选题】
汽车的车身密封性试验包括( )A.
油密封性试验、 水密封性 试验和气密封试验。
B.
粉尘密封性试验、 水密封性 试验和气密封试验。
C.
粉尘密封性试验、 油密封性 试验和气密封试验。
D.
油尘密封性试验、 水 密封试验 试验和电密封试验。
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