焦油加工的主要任务是获得酚、萘、蒽等纯产品和()等粗产品。
参考答案:洗油沥青
When I got up, I found parents were preparing breakfast for me.
儿童1型糖尿病,适用胰岛素治疗;2型糖尿病目前仅有二甲双胍被批准用于儿童()