STM－N帧中复用段DCC为（），传输速率为（）。

为防治碘缺乏病，通常在食盐中添加少量的碘酸钾( KIO₃)。碘酸钾和碘化钾在溶液中能发生下列反应：

KIO₃+5KI+3HSO₄=3I₂+3K₂SO₄ +3H₂O

(1)该反应中，氧化剂是____，氧化产物是___ .

(2)当有3mol I₂生成时，有___mol还原剂被氧化。

(3)当有1mol氧化剂参与反应时，转移电子的物质的量为___mol。

Fruit and vegetables should be a part of what we eat every day. Educating your children about the importance of eating fruit and vegetables is important for their health. Here are some fun activities to help you teach your children about fruit and vegetables.

★ Reading is one excellent way. Choose a colorful book with many different types of fruit and vegetables.

★ Provide your children with fruit and vegetable puzzles. Your children will be able to see what fruit and vegetables look like as they’re putting the puzzles together. You can also teach them the different names of fruit and vegetables.

★ Each day give your children different fruit and vegetables to eat. This will give them the chance to taste many kinds of fruit and vegetables. Talk to your children about what they look like and how they taste and smell.

★ Play fruit and vegetable games. Prepare little cups with fruit and vegetables cut up into small pieces. Cover your children’s eyes and give them one of the cups to try. After tasting, they have to guess what kind of vegetable or fruit it is.

★ Grow vegetables. You can teach your children how vegetables grow by planting them. Your children will also learn how to take care of vegetables.

Judge the following sentences true ( T ) or false ( F ) according to the passage.

小题1: Reading is a good way to help your children know about fruit and vegetables.

小题2:The puzzles can help children know how fruit and vegetables taste and smell.

小题3: By playing fruit and vegetable games, children can know what fruit and vegetables look like.

小题4: Growing vegetables can teach your children how to look after vegetables.

小题5: The passage is mainly about the advantages of eating fruit and vegetables.

女性，75岁。慢性咳喘20余年，近3年伴有双下肢水肿，5天来咳喘加重，应用抗生素、利尿剂，效果不著，1天来失眠、烦躁。血气分析：pH7.35，PaO₂55mmHg，PaCO₂74mmHg，AB42mmol/L，血氯80mmol/L。该患者可能的诊断为（）

A.代谢性酸中毒失代偿

B.呼吸性酸中毒失代偿

C.呼吸性酸中毒伴代谢性酸中毒

D.呼吸性酸中毒伴代谢性碱中毒

E.呼吸性酸中毒代偿

（）决定着入磨和入选粉机的物料量，反映出磨机和选粉机的配合情况，为提高磨机的粉磨效率，减少磨内过粉磨现象，就应适当提高之。

在20kV到35kV电力线附近组塔时，起重机应接地良好。起重机及吊件、牵引绳索和拉绳与带电体的最小安全距离，沿垂直方向（）m，沿水平方向2.0m。

A.5

B.4

C.3

D.2