【单选题】岩石浸水后强度降低的性能叫做岩石的( )。
【单选题】Given the logical variables X=0,Y=1,Value of X∧Y(logical multiply) is
【单选题】翔宇公司拟将信用期由目前的60天缩减为30天,预计赊销额由1200万元变为1000万元,变动成本率为60%,风险投资的最低报酬率为8%,则缩减信用期后( )(一年按360天计算)
【单选题】根据《国内航空运输承运人赔偿责任限额规定》,国内航空运输承运人因发生在民用航空器上或者在旅客上、下民用航空器过程中的事件,造成旅客人身伤亡的,对每名旅客的赔偿责任限额为人民币 元
【单选题】查找计算机系(CS)以及信息系(IS)的年龄在19岁以上同学的基本信息
A.
select * from student where ssex = ' 女 ' and sage>19 and sdept = 'CS' or sdept = 'IS'
B.
select * from student where ssex = ' 女 ' and sage>19 and sdept = 'CS' and sdept = 'IS'
C.
select * from student where ssex = ' 女 ' and sage>19 and (sdept = 'CS' or sdept = 'IS')
D.
select * from student where ssex = ' 女 ' and sage>19 and (sdept = 'CS' or = 'IS')
【单选题】If two variables, X and Y , have a strong linear relationship, then
A.
There may or may not be any causal relationship between X and Y
D.
None of these alternatives is correct
【单选题】查找计算机系(CS)以及信息系(IS)的年龄在19岁以上的女同学的基本信息 。
A.
select * from student where ssex='女' and sage>19 and sdept='CS' or sdept='IS';
B.
select * from student where ssex='女' and sage>19 and sdept='CS' and sdept='IS';
C.
select * from student where ssex='女' and sage>19 and (sdept='CS' or sdept='IS');
D.
select * from student where ssex='女' and sage>19 and (sdept='CS' or ='IS');
【单选题】Give the logical variables X=0, Y=1, the value of X∧Y(logical multiply) is( ).
【单选题】岩石浸水后强度降低的性能叫做岩石的 ( )