下列哪项不是洁净手术部静态监测项目：（）.

A.截面风速和压差

B.自净时间

C.洁净度和温湿度

D.沉降菌细菌菌落数

— It's said that John will be in a job paying over $60,000 ______ year.

— Right, he will also get paid by ______ week. [ ]

A. a; the

B. the; the

C. the; a

D. a; a