A.轉(zhuǎn)換過程 B.轉(zhuǎn)換的當量關(guān)系 C.轉(zhuǎn)換規(guī)律和總量守恒 D.能量守恒
A.105-110% B.110-112% C.110-115% D.112%-115%
A.要低 B.要高 C.不變 D.相等