【单选题】纸料在该段开始大量脱水并形成湿纸页。经该段后,湿纸页干度可达到( )。
【单选题】在下列关于乘数理论的说法中,正确的是( )。
A.
乘数效应是单向的,自发支出的减少对实际GDP没有影响
B.
乘数理论表明如果自发支出的减少,也会引起国民收入成倍减少
C.
在现实中,实际乘数效应与理论计算的乘数效应一样大
【单选题】听力原文:W:Shouldn't someone pick up the clothes from the cleaner's? They have been there for more than five days. M:Don't look at me. Q:What does the man imply? (13)
A.
The clothes don't look clean to him.
B.
He doesn't intend to get the clothes.
C.
The woman can pick up her own clothes.
D.
The woman should stop staring at his clothes.
【简答题】给水系统图用来表达个管道的(),同时反映了个管段的管径,坡度,及附件在管道上的位置