对于价格稳定、质量规格标准统一的产品，应尽量采用（）。
A.实际税率
B.比例税率
C.定额税率
D.累进税率
参考答案：C
President Obama held talks with Chinese President Hu Jintao in Beijing, ________ economic recovery, climate change and stopping the spread of nuclear weapons.
A．which was discussed
B．in which they-discussed
C．when they discussed
D．which discussed
下列哪一项不符合结核性脑膜炎的脑脊液检查结果( )
A．IgA增加B．MBP增高C．葡萄糖减低D．氯化物减少E．溶菌酶升高
