途观1.8T发动机的最大功率是（）Kw，相对于昂科威28T的发动机效率较低。
A.118
B.147
C.96
D.155
参考答案：B
Betty didn't come to school yesterday _____ she was ill.[ ]
A. but
B. than
C. if
D. because
代理人的基本特点是什么？
