男性，30岁，酒后驾车发生车祸，右上腹受伤致肝破裂。神志清楚，上腹部明显压痛，面色苍

       星期天是小明的生日，他刚从外面旅游回来，就见他的爷爷对他说：“你房间里放在三个同学送来的纪念品，你去看吧！”可小明看之后，却对他爷爷说：“怎么只有一个呀？”请问，小明理解和他爷爷说话的意思有什么不同？ 

       爷爷的意思是：_______________________________________________________________________

       小明的理解是：_______________________________________________________________________

流动比率用来判断企业短期债务到期前，可以转化为现金用于偿还流动负债的能力。国际上公认标准比率为( )。

A．100%

B．150%

C．180%

D．200%

下列买断式回购交易要素含义错误的是（）

A、回购期限：买断式回购期限最短为1天，最长为91天

B、首次应计利息：上一付息日（或起息日）至首次结算日之间累计的按百元面值计算的债券发行人应付给债券持有人的利息，单位为元/每百元面值

C、到期全价=到期净价+到期应付利息，单位为元/每百元面值；到期净价加上债券在回购期间的新增应计利息可小于首期净价

D、实际占款天数：实际占款天数=到期结算日-首次结算日

VRML is a (71) for 3D multimedia and shared virtual worlds on the WWW. In comparison to HTML, VRML adds the next level of interaction, structured graphics, and extra (72) (z and time) to the presentation of documents. The applications of VRML are (73) , ranging from simple business graphics to entertaining WWW page graphics, manufacturing, scientific, entertainment, and educational applications, and 3D shared virtual worlds and communities.
X3D is the name under which the development of VRML is continued. X3D is based on XML and is backwards (74) with VRML. Furthermore, it is componentized, profiled, and extensible, which makes it possible to use X3D in very different (75) , from high-end visualizations to lightweight applications.

A．scenarios

B．places

C．applications

D．programs

β-内酰胺酶