11.пżܽY(ji)(gu)A(ch)Ćr(Ԫ/m³)һN?
A.uλA(ch)
B.䓽λA(ch)(oʽ)
C.䓽(d)A(ch)
D.䓽λA(ch)
𰸣A
12.ʹÙ(qun)ָO(sh)(xing)Ŀͨ^ʹÙ(qun)ʽȡ( )ʹÙ(qun)(j)P(gun)Ҏ(gu)֧M(fi)
A.o
B.
C.ڻo
D.30~99
𰸣B
13.AO(sh)ӋĽO(sh)(xing)Ŀ( )Aα횾
A.O(sh)Ӌ
B.ʩDO(sh)Ӌ
C.g(sh)O(sh)Ӌ
D.о
𰸣C
14.աO(sh)̿O(sh)ӋͬlO(sh)ӋͬЧίз(yng)аoԓஔ(dng)ڹO(sh)ӋM(fi)İٷ֮?
A.25
B.10
C.20
D.15
𰸣C
15.O(sh)λɵĿO(sh)ӋM(fi)Ӌ( )
A.O(sh)λM(fi)
B.оԇ(yn)M(fi)
C.O(sh)ӋM(fi)
D.̱O(jin)M(fi)
𰸣C
16.ijS1996꽨a(chn)21000λa(chn)ƷͶYrָ(bio)3000Ԫ/*;Ӌ1998_ʼMͬSa(chn)22500O(sh)3ꡣ(j)1996-1998O(sh)cϵărƽLָ(sh)5%A(y)yڽO(sh)3еO(sh)cϵărƽLָ(sh)4%Æλa(chn)ƷͶYrָ(bio)ӋM(xing)ĿͶY~( )
A.999fԪ
B.3999fԪ
C.7893fԪ
D.9998fԪ
𰸣C
17.a(chn)(bio)(zhn)O(sh)ԭrһָ( )
A.O(sh)SĽ؛r
B.Src\(yn)M(fi)bжM(fi)֮
C.O(sh)A(y)r
D.O(sh)ɱr
𰸣A
18.ijO(sh)(xing)ĿO(sh)ڞ12͵3Jքe200fԪ200fԪ300fԪ10%.ÿJȫƽl(f)Ï(f)Ӌ3ĩ֧Ϣ( )fԪ
A.108
B.100.1
C.80.5
D.70
𰸣B
19._O(sh)ԇ܇rM(fi)Ñ(yng)Ӌ( )
A.O(sh)ُM(fi)
B.ԇ(yn)оM(fi)
C.bM(fi)
D.(lin)ԇ\(yn)D(zhun)M(fi)
𰸣C
20.׃οp( )Ӌ㽨e
A.Ȼ
B.(bio)(zhn)
C.ˮƽͶӰ
D.Y(ji)(gu)
𰸣A