药用高分子材料学研究的任务是什么？

某兴趣小组为测定实验室中一瓶久置的过氧化氢溶液中溶质的质量分数，实验测得相关数据如下图所示：

（1）剩余的混合物中二氧化锰的质量为     g，反应生成氧气的质量为     g。

（2）计算该过氧化氢溶液中溶质质量分数。

（3）实验表明硫酸铜溶液在该反应中也能起到二氧化锰的作用。若用5.6g无水硫酸铜代替二氧化锰进行本实验，计算剩余的溶液中溶质的质量分数。

（硫酸铜全部溶于水，计算时保留到0.1%）

A．Nokia­6010

Price: $24.99　Color display: Yes

Wireless Internet ready: Yes

Digital camera: No　2­way text messaging: Yes

Talk time: Up to 330 minutes

Standby time: Up to 240 hours　Weight: 5.08 ounces

Dimensions: 4.68″×1.97″×0.90″

Games: Backgammon, Bowling, Air glide, and Sky diver plus downloadable Java games

B．Motorola­C650 (Camera phone)

Price: $99.99　Color display: Yes

Wireless Internet ready: Yes

Digital camera: Yes　2­way text messaging: Yes

Talk time: Up to 210 minutes

Standby time: Up to 215 hours　Weight: 3.10 ounces

Games: Downloadable games

C．Samsung­V1660 on Sprint PCS

Price: Free　Color display: Yes

Wireless Internet ready: Yes

2­way text messaging: Yes

Talk time: Up to 204 minutes

Standby time: Up to 168 hours 　Weight: 3.54 ounces

Memory locations: 200 entry phonebook

D．Motorola­SLVR­L7

Price: $206.4　Color display: Yes

Wireless Internet ready: Yes

Digital camera: Yes　2­way text messaging: Yes

Talk time: Up to 450 minutes

Standby time: Up to 345 hours　Weight: 3.39 ounces

Dimensions: 4.45″×1.93″×0.45″

Games: Enjoy preloaded J2ME games or downloadable games

E．Nokia­8010

Price: $124.99　Color display: Yes

Wireless Internet ready: Yes

Digital camera: No　2­way text messaging: Yes

Talk time: Up to 330 minutes

Standby time: Up to 240 hours　Weight: 4.08 ounces

Dimensions: 3.68″×1.27″×0.70″

Games: Downloadable games

F．Kyocera­SE47 slider on version wireless

Price: $149.99　Color display: Yes

Wireless Internet ready: Yes

Digital camera: No　2­way text messaging: Yes

Talk time: Up to 210 minutes

Standby time: Up to 100 hours　Weight: 3.39 ounces

Memory locations: 200 entry phonebook

以下是五个人的信息介绍。请将这五个人与他们需要的最佳款式的手机匹配起来。

小题1:Susan is at a middle school.Her parents want to buy her a cheaper cell phone without games installed.

小题2:Mike intends to buy a phone with longer talk time and standby time and it can not be expensive.

小题3:Jane is at college.She would like to buy a phone which can slide the face up to make a call, and slide it down when you're done and it has to be light.

小题4:George would like to have a cheaper phone with digital camera.

小题5:Tom only buys Nokia.He lost one and he wants to buy another which is smaller.

与苔藓植物相比，蕨类植物更能适应陆地生活，主要原因是（   ）

A．具有根、茎、叶，体内有输导组织

B．用孢子进行繁殖

C．没有根、茎、叶等器官的分化

D．植株矮小，茎和叶内没有输导组织

某餐饮企业通过连锁加盟方式与多家餐饮企业建立战略联盟，该战略联盟属于（）。

A.技术开发与研究联盟

B.营销联盟

C.产品联盟

D.产品协调联盟

以下哪些属于客户购车的原则（）

A.经济能力的原则

B.用途决定车型的原则

C.使用维修方便原则

D.个人喜好原则