A.提高3.3% B.減低3.3% C.提高0.33% D.減低0.33%
A.溫度高,分解時(shí)間短 B.溫度低,分解時(shí)間長(zhǎng) C.溫度高,分解時(shí)間長(zhǎng) D.溫度低,分解時(shí)間短
A.0.485 B.0.514 C.0.498 D.0.541