11.(yn)T̕r횙zļӛ䛵( )
A.ϵĮa(chn)ƷϸC
B.ܙzy
C.T̵ʩD
D.TĈr
𰸣D
12.P(gun)(lin)wͶ(bio)Ĕėl_?
A.MȻ˿ԽM(lin)wһͶ(bio)˵ݹͬͶ(bio)
B.ͬһI(y)ĆλMɵ(lin)wɰY|(zh)ȼ^ߵĆλ_Y|(zh)ȼ
C.(dng)Ͷ(bio)Ҕ(sh)^rИ(bio)˿Ͷ(bio)˽M(lin)wͬͶ(bio)
D.(lin)w(yng)(dng)ӆͬͶ(bio)f(xi)h_s؟(z)Σԓf(xi)hBͬͶ(bio)ļһύИ(bio)
𰸣D
13.ՈI(lng)ȡʩSCҪ( )k
A.O(sh)λ
B.O(sh)Ӌ(j)λ
C.ʩλ
D.O(jin)λ
𰸣A
14.߶50mµĻֹxʯcݔ܃(ni)֮^( )
A.1:2
B.1:3
C.1:2.5
D.1:5
𰸣C
15.O(sh)Ӌ(j)λԽλY|(zh)ȼД̵ģ̎ͬsO(sh)Ӌ(j)M(fi)( )P
A.2
B.23
C.12
D.34
𰸣C
16.ʡеĿwҎ(gu)ĂT?
A.(w)Ժ
B.(w)Ժl(xing)Ҏ(gu)ܲT
C.ʡ
D.
𰸣A
17.M(jn)O(sh)䑪(yng)M(fi)Ӌ(j)㹫ʽ( )
A.(yng){M(fi)~=(r+P(gun))M(fi)
B.(yng){M(fi)~=(r+P(gun)+ֵ)M(fi)
C.(yng){M(fi)~=(r+P(gun))(1+M(fi))M(fi)
D.(yng){M(fi)~=(r+P(gun))/(1-M(fi))M(fi)
𰸣D
18.M(jn)йO(sh)Ӌ(j)И(bio)(xing)Ŀu(bio)ίTИ(bio)˵ĴP(gun)g(sh)(jng)(j)ȷČҽMɆT˔(sh)( )
A.φΔ(sh)
B.φΔ(sh)
C.φΔ(sh)
D.φΔ(sh)
𰸣B
19.P(gun)bbʩǰĘӰ冖}(xing)_?
A.Ҫa(chn)S]ĘӰ
B.ҪλʩλƳĘӰ
C.(yng)ҪϘӰ巽ʩ
D.ҪϵĘӰӰg()(jng)P(gun)_J(rn)
𰸣D
20.ʹÙ(qun)ͬij( )
A.(w)Ժ
B.ʡʡ
C.к
D.hͿh
𰸣D