A.20 B.23.4 C.25 D.26
A.風(fēng)筒全長(zhǎng)的60% B.風(fēng)筒全長(zhǎng)的50% C.風(fēng)筒全長(zhǎng)的40% D.風(fēng)筒全長(zhǎng)的30%
A.5.5kW B.11kW C.14kW D.28kW