A:However the weather is like
B:However is the weather like
C:whatever is the weather like
D:Whatever the weather is like
计算 3-x2x-4÷5x-2 =____
补写出下列句子中的空缺部分。
将一定质量由Cu和CuO组成的固体粉末加入到200 mL 11 mol/L的浓HNO3中,充分反应后,固体溶解完全,收集到NO、NO2混合气体8.96 L(标准状况).若将该混合气体与4.48 L O2(标准状况)混合并通入到足量水中,恰好生成HNO3.
I've got a postcard my friend.