A.沖突點(diǎn) B.會(huì)合點(diǎn) C.分叉點(diǎn) D.交叉點(diǎn)
A.ω>0.5% B.ω>1.0% C.ω>1.5% D.ω>2.0%
A.0.1% B.0.2% C.0.3% D.0.4%