____________ is playing with ____________ ball.[ ]
A. he; his
B. She; his
C. He; his
答案:C
Murphy征(+)则提示()
A.细菌性肝脓肿形成
B.急性胆管炎
C.肝总管结石
D.肝左管结石
E.急性胆囊炎
下列推论正确的是( )
A.S(g)+O2(g)=SO2(g)△H1,S(s)+O2(g)=SO2(g)△H2;
则:△H1>△H2
B.C(石墨,s)=C(金刚石,s)△H=+1.9kJ/mol,则:由石墨制取金刚石的反应是吸热反应,金刚石比石墨稳定
C.NaOH(aq)+HCl(aq)=NaCl(aq)+H2O(l)
△H=-57.4kJ/mol,则:含20gNaOH的溶液与稀盐酸完全反应,放出的热量为28.7kJ
D.CaCO3(s)=CaO(s)+CO2(g)△H>0,△S>0,则:该反应任何温度下都能自发进行