【单选题】关于瞳孔对光反射通路的描述,正确的是( )
B.
一侧视神经受损时,光照健侧眼球时,可引起双侧瞳孔缩小
C.
一侧视束受损时,光照健侧眼球时,患侧瞳孔不能缩小
D.
一侧动眼神经受损时,光照健侧眼球时,可引起双侧瞳孔缩小
【简答题】井字梁楼盖混凝土强度等级应大于( ),为了避免和减小楼盖混凝土收缩裂缝,其强度不宜过高,跨度较大时一般宜采用C30。
【单选题】井字梁楼盖混凝土强度等级应大于( ),为了避免和减小楼盖混凝土收缩裂缝,其强度不宜过高,跨度较大时一般宜采用C30。
【单选题】Investment is usually
A.
more variable than consumption.
B.
less variable than consumption.
C.
as variable as consumption.
D.
It is hard to tell from the data whether investment is more or less variable than consumption.
E.
a larger component of the GNP than consumption.
【简答题】E-book is short for electronic( 电子的) book. It is usually read on personal computers. Some mobile phones can also be used to read e-books. Earlier e-books were written for a specific group of readers a...