重力除油罐是靠油、水及固体悬浮物的()不同作重力沉降。
A、相对密度
B、质量
C、体积
D、温度
参考答案:A
3.Tom went against his promise ______ he would never cheat in exams, ______ made him unpopular with his classmates.
A.that; that
B.which; that
C.that; which
D.which; which
爱斯梅拉达失踪后,伽西莫多跟着克洛德爬上了钟塔,请概述接下来发生的事件。