携带式或移动式用电设备的专用芯线接地有什么要求？

染色粒

任务型阅读理解：仔细阅读下面的短文并按要求完成后面的小题。(5小题，每小题2分，共10分)

Playing  is serious business for children . In fact , it’s what they do best ! Ask them why they do it , and kids will probably say , “ Because it’s fun !” But it’s much more than that . It’s also good for them .

3.Studies show that from birth babies learning through play . They use their five senses to get know their new world . Touching allows them to discover how different things feel . Brightly colored toys and clothing help develop a baby’s sense of sight .

When small children choose which toy to play with , they begin developing their abilities in making decisions .Children love toys that allow them to use their imagination .Sometimes an empty box is more fun than a high—tech toy . That’s because a box can become anything a child imagines it to be .

Crayons , paints and Play-Doh (彩色塑泥) are also good because they allow children to create . Traditional building blocks teach important pre-math skills like problem—solving .

4.Playing doesn’t become any less important once children start school . Many valuable lessons about life are learned on the school playground . Kids learn how to share , take turns and play by the rules .

What can children do best in their childhood ?______________

What kind of toys do children lover ?

_______________________________________________.

将短文译成汉语

3_____________________________________

4_____________________________________________

5.请给短文拟一个适当的题目。___________________________

患者，男性，18岁。挫伤后左膝关节逐渐肿大，关节腔抽出血性积液，下一步最重要的检查是（）。

A.血常规

B.BT

C.APTT

D.PT

E.PAIg

关于税法的效力和解释，下列陈述正确的有（）。

A.税法的效力表现为空间效力、时间效力和对人的效力

B.由一个主权国家制定的税法，必须适用其主管的全部领域

C.全国人大和常委会制定的税法在全国范围内有效

D.我国的税法，坚持不溯及既往的原则

E.我国的税法采用了属人和属地相结合的原则

每3年，开断过短路电流，或自上次试验之后又有（）次以上分合闸操作，应进行SF₆交流断路器主回路电阻测量试验。

A.50

B.100

C.150

D.200