未知题型
["金属","积碳"]
Leningrad, Moscow and Borodino were the three targets o...
判断题Leningrad, Moscow and Borodino were the three targets of Hitler’s campaign.
外消旋体和内消旋体旋光度都为0，因而它们是一类物质。
未知题型外消旋体和内消旋体旋光度都为0，因而它们是一类物质。
集成运放是一种高性能的____________耦合的多极放大电路
未知题型集成运放是一种高性能的____________耦合的多极放大电路
