关系S(S#,SNAME,SEX),C(C#,CNAME),SC(S#,C#)。其中S#为学生号,SNAME为学生姓名,SEX 为性别,C#为课程号,CNAME 为课程名。要查询选修“计算机”课的全体女学生姓名的SQL语句是SELECT SNAME FROM S,C,SC WHERE子句。这里 WHERE子句的内容是
A. S#=SC.S#ANDSEX='女'AND CNAME='计算机'
B. S#=SC.S#ANDC.C#=SC.C#AND CNAME='计算机'
C. SEX='女'and CNAME='计算机'
D. S#=SC.S#ANDC.C#=SC.C#AND SEX='女'AND CNAME='
The children will have to ______ their play-time hours when school opens.
A. cut in
B. cut up
C. cut on
D. cut down
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
1 don't think it is any use ______ this matter any further.
A. discussing
B. to discuss
C. to discussing
D. to be discussed