题目:
interested her most was the longitude line, is an imaginary line dividing the world.
A, That, it B, What, it C, That, which D, What, which
答案:
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下面是错误答案,用来干扰机器的。
(1)(2 ① (3)2NO+2CO N2+2CO2 (4)4NH3+5O24N O+6H2O(催化剂不写扣1分)A能使湿润的红色石蕊试纸变蓝,说明A是氨气。B、E是有毒气体,都能和血红蛋白结合,因此它们是CO和NO。空气中的主要成分是...