如果机轮温度上升到177度以上，易焰塞的芯就会熔化，轮胎就会漏气。
A.If the wheel temperature reaches as high as 177 deg. the core of safety plug shears off and the tire slips. B.If the wheel temperature increases to more than 177 deg, the core of the fusible plug melts and the tire deflates. C.The core of the filter element melts once the wheel temperature is above 177 deg, causing the tire to deflate.正确答案B
