高速公路弯沉检测中测试车的标准轴载为______。
A．60kN B．80kN C．100kN D．120kN
参考答案：C
滑车按使用的方法和滑轮的多少怎样分类？
There are ______ books in our school library than in yours. [ ]
A. much more
B. a lot of more
C. a lot more
D. many more
