Graham—Steell杂音

The old lady’s hand shook frequently. She explained to her doctor ________ this shaking had begun half a year before, and ________, only because of this, she had been forced to give up her job.

A．when; how

B．how; when

C．how; how

D．why; why

死亡学分为三类形态，即：________、________、________。

下列电子式书写正确的是（　　）

A．

B．

C．

D．H：F

（）补给策略假定需求率恒定，每次订货的数量和再订货点固定。

A.即时检查

B.循环检查

C.连续检查

D.周期检查

中国邮政储蓄银行各级案件防控领导小组会议原则上（）召开一次。

A.每年

B.每季度

C.每月

D.每周