某电视台连续播放5个广告，其中3个不同的商业广告和2个不同的奥运宣传广告，要求最

建筑安装工程费用项目的组成包括( )。

A．直接费用

B．间接费用

C．企业管理费

D．利润

E．税金

当菌斑指数（P1I）记录为2时，是指（）

A.近龈缘区无菌斑

B.近龈缘区有薄的菌斑，可用探针尖刮出

C.龈缘或邻面中等量菌斑

D.牙面2/3覆盖菌斑

E.龈沟内或龈缘区及邻面大量软垢

语法填空

     We arrived at Chiang Mai at 9 p. m.It wasn't 1.________two days later that we were able to take a

closer look at Thai elephants.2.________our stay there,we visited the Measa Elephant Camp,some 20

minutes' drive from the city center.The camp,3.________ stands aside a rushing river in a lush tropical

valley,is the home of 78 elephants.When we arrived there in the early morning,many black elephants,some with creamy white tusks,4.________(enjoy) their daily bath in the river.

     At Measa,we were amazed by the elephants' 5.________(astonish) skills.They could not only play

football and 6.________harmonica (口琴),but also paint incredibly wonderful pictures with 7.________

trunks.Little wonder then that Bangkok's little elephant accomplished the feat (技艺) vividly

8.________(describe) in the primary school textbook.

     At the end of the Thailand tour,everybody in the group seemed to be attracted by these elephants as all of 9.________rushed to purchase elephant sculptures,toys,ornaments and Tshirts.I was no

10.________(except). The elephantpendant (坠饰) key chains I bought turned out to be popular gifts for my colleagues.

如下图所示的过程为过氧化氢被分解速率的曲线，(纵坐标表示过氧化氢被分解速率)说明酶的哪一特性( )

A．专一性
B．高效性
C．催化需要适宜的温度
D．催化需要适宜的pH

根据并联电容器精益化评价细则要求，下列关于电容器外观的说法正确的是（）。

A.电容器母线及分支线应标以相色，平整无弯曲

B.运行编号标志清晰、正确可识别

C.电容器外壳应无明显变形，外表无锈蚀，所有接缝不应有裂缝或渗油

D.支撑瓷瓶无破损