分行结算督导人员()至少对全行的发卡机进行一次抽查。
A.每旬
B.每周
C.每月
D.每季
参考答案:D
--- Let’s go to Canada for a holiday.
--- Sorry, we won’t go there. All of us except him _______ to Canada.
A.have gone
B.has gone
C.have been
D.has been
球磨机分类按筒体长径比分长磨,()
A.其长径比大于1.5
B.其长径比大于2.5
C.其长径比大于3.5
D.其长径比大于4.5