柴油机冷磨合结束，调整供油提前角。
参考答案：对
The world's population has grown _____ it was in 1800.[ ]
A. six times more than what
B. more than six times what
C. six times more than which
D. more than six times that
报纸的主要主办单位应与其主管单位的关系是：（）
A.隶属关系
B.直属关系
C.同级关系
D.关联关系
