A.-2/3
B.2/3
C.-3/2
D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.-2/3B.2/3C.-3/2D.3/2
[单选题]A.影响小气候和太阳辐射B.产生温室效应C.臭氧层破坏D.形成酸雨E.产生光化学烟雾
[单选题]A.影响小气候和太阳辐射B.产生温室效应C.臭氧层破坏D.形成酸雨E.产生光化学烟雾
[问答题]--------------.
[问答题]--------------.
[单选题]( ).A.B.C.D.