A.15W-30 B.10W-30 C.5W-30
A.低轉(zhuǎn)速時(shí)需要較長(zhǎng)較粗的進(jìn)氣道 B.低轉(zhuǎn)速時(shí)需要較長(zhǎng)較細(xì)的進(jìn)氣道 C.高轉(zhuǎn)速時(shí)需要較長(zhǎng)較粗的進(jìn)氣道