题型:判断题 —Your friend Daming plays table tennis very well.—_____[ ]A. I agree. B. What do you reckon? C. Good luck. D. You're welcome. 查看答案
题型:判断题 NA代表阿伏加德罗常数,下列说法正确的是( )A.含有NA个CH3COO-的醋酸溶液中氢离子数为NAB.3.65g液态HCl中构成的粒子总数为0.2NAC.常温下5.6gFe投入足量浓硝酸中,则转移电子数为0.3NAD.常温常压下,30g乙酸与30g葡萄糖含有的氧原子数均为NA 查看答案