A:Can I have some cake?
B:Can I have some water?
请仔细阅读《中国行政区划》图,下列哪个国家不是我国的邻国( )
②若定量量取液体时,量筒应先放____,视线应与____处保持水平;
③如图为50mL量程的量筒内液体的切面图,其体积为____ mL.