盘、盆、碗等器皿类物品,尽量单个包装;包装时应将盖打开;若必须多个包装在一起时,所用器皿的开口应朝向一个方向;摞放时
A. 器皿间用指示剂,以监测灭菌效果
B. 器皿间用吸湿毛巾或纱布隔开,以利蒸汽渗入
C. 器皿间不用隔开,以利蒸汽渗入
D. 器皿可摞放以利蒸汽渗入
E. 器皿间用器械隔开,以利蒸汽渗入
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1 don't think it is any use ______ this matter any further.
A. discussing
B. to discuss
C. to discussing
D. to be discussed
James Martin的信息工程学提出了一种企业数据处理系统建设的模式,其中包括很多模块 Ⅰ.企业模型的建立 Ⅱ.特定主题数据库的详细的数据模型设计 Ⅲ.过程化语言的使用 Ⅳ.信息资源的战略规则 以上哪些是最低层的两个模块
A. Ⅰ和Ⅱ
B. Ⅱ和Ⅳ
C. Ⅲ和Ⅳ
D. Ⅰ和Ⅳ
We felt very sad when we heard the news that the manager was killed in his office yesterday.
A. respectful
B. respectable
C. respective
D. respecting
They did not find ______ to prepare for the worst conditions they might meet.
A. worth their while
B. it worthwhile
C. it worth
D. it worthy