A.15° B.25° C.30° D.45° E.60°
A.Z大,Mm大 B.Z大,Mm小 C.Mm與Z無(wú)關(guān) D.Mm與Z成反比
A.1m.s-1 B.2m.s-1 C.3m.s-1 D.4m.s
A.700nm; B.600nm; C.500nm; D.400nm .
A.3.0B.3.3C.3.6D.4.0