题目

亚硝酸钠(NaNO3)是工业盐的主要成分，在漂白、电镀等方面应用广泛。己知: 室温下，2NO+Na2O2= =2NaNO2，以木炭、浓硝酸、Na2O2为主要原料制备亚硝酸钠的装置如图所示。(部分夹持装置已略去)下列说法正确的是 A.实验开始前先向装置中通入N2，实验结束时先停止通入N2再熄灭酒精灯 B.可以将B中药品换成NaOH 溶液 C.应在B、C之间加一个盛放碱石灰的干燥管 D.D装置用于尾气处理，标况下，每吸收11.2L的尾气消耗0.2mol 的高锰酸钾 1.Man should be _____(仁慈的)，because man is different from animals. 2.Come and see me at your ______(方便). 3.The injured man is _____(预计)to recover in a month. 4.She helped me with my English without ______(犹豫) 5.Lack of skills _____(注定)him to live a poor life. 6.We talked as if we were old  _____(相识) 7.The young man ____(抢劫)her of her bag yesterday. 8.Can you think of the _____(可供选择的事物) we would use today? 9.The earthquake _____(中断) all the traffic in the area. 10._____ (假定)it rains tomorrow,what shall we do?