我国的《公路沥青路面再生技术规范》建议水泥等活性填料一般不超过（）
A.1%
B.1.5%
C.2%
D.2.5%
参考答案：B
Jim is fond of his present job. He must get a real ________ out of his work.
A．kick
B．pleasure
C．happiness
D．satisfaction
诊断泌尿系肿瘤出现远处转移下列哪种方法最好（）
A.CT
B.MRI
C.B超
D.PET（正电子发射体层摄影）
E.IVU（静脉尿路造影）
