目前手机股市支持的券商有哪几家？（）
A、光大证券
B、中投证券
C、国信证券
D、国泰君安证券
参考答案：A, B, C, D
---He was almost killed once.
---When was ______?
---______ was in 2012 when he was in the college.
A．that; It
B．this; This
C．this; It
D．that; This
下列说法正确的是
A．已知2H2(g)＋O2(g)＝2H2O(g)；△H＝－483.6 kJ· mol－1，则氢气的燃烧热为
241.8 kJ· mol－1
B．已知NaOH(aq)＋HCl(aq)＝NaCl(aq)＋H2O(l)；△H＝－57.4 kJ· mol－1
则含0.5mol NaOH的稀溶液与稀醋酸完全中和，放出的热量小于28.7kJ
C．常温下，反应C(s)+CO2(g)=2CO(g)不能自发进行，则该反应的
D．己知2C(s)＋2O2(g)＝2CO2(g)）；△H=" a" kJ· mol－1、2C(s)＋O2(g)＝2CO(g)；△H="b" kJ· mol－1，则a＞b
