A.光照時(shí)間長(zhǎng) B.氣溫炎熱 C.飲水充足 D.通風(fēng)時(shí)間長(zhǎng)
A.28°F B.32°F C.35°F D.37°F
A.汞 B.鐵、鋅 C.鉛、鎘