汉武帝接受了_________的建议，下令允许诸王将自己的封地分给子弟，建立较小

手足口病的主要病位是（）

A.肺卫

B.脾胃

C.脾肾

D.肺脾

E.肺胃

化学方程式不能提供的信息是（　　）

A．化学反应速率的快慢

B．反应物与生成物之间的质量比

C．生成的各粒子的相对数量

D．在什么条件下发生反应

钢管堆放的两侧应设立柱，堆放高度不宜超过（）m，层间可加垫。

A.0.5

B.1

C.1.5

D.2

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．broad

B．implicit

C．explicit

D．special

传输电平通常采用功率比值，具有（）关系。