船底望光的主要目的是（）。①检验水尺；②观测船体纵向变形；③检查测深仪换能器的安装位置。
A.①②对
B.②③对
C.①③对
D.①②③对
参考答案：A
Our city has developed into a big city；which is ____ it used to be. [ ]
A. four times larger than that
B. four times the size of what
C. four times the size larger than what
D. as four times the size as that
基金产品营销中的垂直式产品线是指，基金管理公司根据市场范围，不断开发新品种，曾加产品的数量和类型。 ( )
