题目

The way he had the problem _____his ability. A.setting showed  B. settled showing C. settled showed D. settled showing 答案：C标准状况（0℃和101KPa）下，2.00gHe、3.01×1022个N2、1.60gO2混合，该混合气体的体积是A.13.44LB.7.84LC.10.08LD.6.72L