A.1倍一3倍;0.5B.3倍一5倍;0.5C.5倍一7倍;0.5D.7倍一9倍;0.5
A.1°/10s~2°/10sB.2°/10s~3°/10sC.3°/10s~4°/10sD.4°/10s~5°/10s