按隔离区域划分属于半污染区域的是
A．病区内走廊B．配膳室C．更衣室D．厕所E．治疗室
参考答案：A
With his attention _____ on his book, he didn’t notice me enter his study.
A．focusing
B．focused
C．to focus
D．focus
下列人员中，必须在记账凭证上签章的有______。
A．单位负责人 B．会计主管C．记账人员 D．制单人员
