题目

Chester City Library offers a range of Library Special Needs Services to people who don’t have access to our library service in the usual way. As long as you live in Chester City, we’ll provide a wild range of library services and resources including: ● Large printed and ordinary printed books ● Talking books on tape and CD ● DVDs and music CDs ● Magazines ● Reference and information requests Home delivery service     Let us know what you like to read and we will choose the resources for you. Our staff will deliver the resources to your home for free. We also provide分别将下列各组内的三种物质同时放入水中，只得到无色透明溶液的是 [　　] A．FeCl3、KOH、NaCl B．K2SO4、HCl、BaCl2 C．CuSO4、HCl、KCl D．Na2SO4、Na2CO3、NaNO3