11䓽Y(ji)(gu)һ㲻(hu)żȻdֲdͻȻƉ,@䓲ľ:A.
A.õ;B.õg;
C.ă(ni)M;D.õď
12㶨ˮ(yu)ָ
A.Ĕ;
B.ˮ돽Ĕ;
C.߅ϵ(sh)0Ĕ;
D.ˮ돽ˮһĔ档
13BӼD(sh)Ӌ(j)ď(qing)ȗlbs=Pbs/Abs[bs]УAbsָBӼģ
A.Me;
B.xDe;
C.(sh)HDe;
D.DڵęMe
14O(sh)ȫůĽo(h)Y(ji)(gu)Ă?
A.ԽԽ
B.ԽСԽ
C.(du)Ҫ
D.(du)СҪ
15ijӵЧָ(bio)C=20kPaա=300(dng)ܿ(yng)l=258kPa,3=120kPar(sh)Ӄ(ni)дڿ϶ˮ50kPa̎B(ti)(A)
A.ȫB(ti)
B.ƉĠB(ti)
C.oƽB(ti)
D.OƽB(ti)
16ľغ(dng)ľgƫĕr(sh)ķNf(shu)_?
Aκr²(yng)ԓ挒ȵ1/4
BǿO(sh)Ӌ(j)r(sh)(yng)ԓ挒ȵ1/4
CO(sh)Ӌ(j)r(sh)˴ԓ挒ȵ1/4
Dƫľԓ1/4r(sh)ɲO(sh)ˮƽҸĴʩ
17ԭӵӽY(ji)(gu)ʽУ_ʾB(ti)ԭӵӽY(ji)(gu)ʽУ
(A)[He]2S2 (B)[Ne]3S23P2
(C)[Ne]3S23P4(D)[Ar]3d64S3
f(shu)[He][Ne][Ar]քeԚwHeNeAr(yng)ӽY(ji)(gu)[He]ʾ
IS2Y(ji)(gu)[Ne]ʾIS22S22P6Y(ji)(gu)[Ar]ʾIS22S22P63S2P6Y(ji)(gu)
18ͨ{(dio)ϵy(tng)һ(xing)՚^(gu)V?
A.HL(fng)
B.HL(fng)
C.L(fng)L(fng)
D.HL(fng)
19P(gun)ڰʽz֧е䓼ӄŰº(xing)_?
AS֧ߴС1mm
BS֧ߴС2mm
Cx
D(yng)С1mm
20(j)俹ҪԷ֞(li)(dng)(li)II(li)(chng)ؕr(sh)кηN_?
Aɰ^(q)O(sh)Ҷ1Ӌ(j)
Bɰ^(q)O(sh)ҶӋ(j)ã1Ȳȡʩ
C^(q)O(sh)Ҷ1Ӌ(j)úͲȡʩ
DزȡO(sh)ҶȵĿʩע(c)Y(ji)(gu)̎