11ߌýͨL(fng){(dio)L(fng),()ɲO(sh)y
A.Խօ^(q)̎
B.ԽͨL(fng){(dio)C(j)ҪĻ(zi)ΣU(xin)Դķg͘ǰ̎
C.ˮƽܵķ֧ܶ
D.Խ׃οpăɂ(c)
:C
12C(j)еӉL(fng)IJλ(yng)еֵ,Ă(g)ϸҎ(gu)Ҫ?()
A.g50Pa
B.]yӞ50Pa
C.ǰҡǰҞ25Pa
D.ǰҞ25Pa
:B
13g(sh)҃{(dio)(yng)()
A.
B.ؓ(f)
C.
D.o
:A
14C(j)еşϵy(tng)ş֧ϑ(yng)O(sh)şy,y(dng)şضȳ^()rԄ(dng)P(gun)]
A.70
B.200
C.20
D.400
:C
15ȫ{(dio)Ĺ,ȫǶ,ǃ(ni)Ŀ՚⑪(yng)()
A.
B.ؓ(f)
C.0(Ҳؓ(f))
D.,ؓ(f)
:D
16.(j)^ͷ˲(){(dio)ʽ
A.L(fng)C(j)PܼL(fng)
B.ȫL(fng)
C.ȫ՚
D.L(fng)C(j)P
:A;
17o(h)Ҏ(gu)^(q)(du)߶ȿeҪ?[ ]
I.vʷĻ;.vʷĻo(h)^(q);.ﱣo(h)λ;.L(fng)م^(q);V.Řľ^^(q)
A.IV
B.IV
C.V
D.I
:D
18.ýͨtҪص¶ȵСֵ(yng)()
A.0.2%
B.0.3%
C.0.4%
D.0.5%
:A
19.(j)оGlҎ(gu)Řָg()ϵĘľ
A.100
B.200
C.300
D.500
:A
20.ֱL(fng)cÿˮƽL(fng)ܽ̎ˮƽܶO(sh)ʲôyT()
A.y
B.ƽy
C.{(dio)(ji)y
D.şy
:A