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CHCl3
B:CH2Cl2
C:CH3Cl
D:CCl4
-NH2
B:-COOH
C:-CH3
D:-SO3H
E:-CH2CH2CH3
H2CO3
B:CH3COOH
C:HCOOH
D:HOOC-CH2-CH₂-COOH
Hg(CH3)2
B:HgO
C:Hg
D:Hg2Cl2
KHC8H4O4−HCl
B:NaH2PO4−Na2HPO4
C:NH4Cl−NH3⋅H2O
D:NaAc−HAc
O3
B:H2CO
C:H2O2
D:HNO2
H5
B:H2A
C:H2B
D:H3
E:H4
is caused mainly by calcium sulfate and magnesium sulfate
B:is caused mainly by CaSO4 and MgSO4
C:cannot be removed by boiling
D:can be removed by the addition of Na2CO3 while CaCO3 and MgCO3 are produced
PaO2↓
B:PaCO2↓
C:PaCO2正常
D:PaO2正常
log2(n)
B: log2(n)
C: log2(n) +1
D:log2(n)+1
rB=dnA/Vdt
B:rB=dnB/Vdt
C:rB=dCA/dt
D:rB=dCB/dt
(∂V/∂nB)T,p,nC(C≠B)
B:(∂H/∂nB)S,p,nC(C≠B)
C:(∂G/∂nB)p,V,nC(C≠B)
D:(∂S/∂nB)T,H,nC(C≠B)
Q1+Q2/4πE0r
B:Q1/4πE0R1 + Q2/4πE0R2
C:0
D:Q1/4πE0R1