作业前外观检查，观察叉车下的地面确认（）等。
A、地面痕迹
B、地面油迹
C、地面水迹
D、土质
E、轮迹
参考答案：B, C
某A股的股权登记日收盘价为30元/股，送配股方案每10股送5股每10股配5股，配股价为10元/股，则该股除权价为( )元/股。
A．16.25
B．17.5
C．20
D．25
--- I have great difficulty figuring out the answer to this problem.
--- _____ my advice, you ____ less difficulty with such problems.
A．If you had followed, would have had
B．If you followed, would have
C．If you had followed, would have
D．If you listen, will have
