中国石油大学 / 中石油
正确率：100%
9. One company has presented an idea in which metal strips inserted in pavements and roads operate fly wheels __________a piston action using hydraulic fluid.
A、with means of
B、by mean of
C、with mean of
D、by means of
A、with means of
B、by mean of
C、with mean of
D、by means of
参考答案：
佳题速递：