问题 单项选择题

组策略中软件安装属性中没有的选项卡是()。

A.常规

B.高级

C.类别

D.升级

答案

参考答案:D

问答题

金属材料在国防建设中起着重要的作用,图1为歼﹣15飞机在辽宁舰上起飞.

(1)铝合金用于制造飞机的外壳,铝合金材质的主要优点是                   

(2)改装前的辽宁舰舰身锈迹斑斑,钢铁的锈蚀主要是铁与空气中的                 共同作用的结果.工业生产中常用稀盐酸除去铁制品表面的铁锈,该反应的化学方程式为                                       

(3)为了避免轮船的钢质外壳被腐蚀,通常在轮船外壳上镶嵌比铁活动性强金属.小明为探究锌、铁、铜三种金属的活动性顺序,设计了如图2的两个实验:

①实验一中,小明以“金属表面产生气泡的快慢”为标准来判断锌、铁的活动性强弱,有同学认为不够合理,理由是                      

②实验二中,若出现                  现象,可证明铁的活动性强于铜,该反应的化学方程式为                                    

(4)辽宁舰的建造耗费了大量的钢材.某兴趣小组在实验室用图3所示装置模拟炼铁的化学原理,并测定赤铁矿中氧化铁的质量分数(装置气密性良好,反应完全且赤铁矿中的杂质不参加反应,称重赤铁矿样品的质量为wg).

①装置A中生成铁的化学方程式为                    ,装置B中发生反应的化学方程式为                                              

②要测定该赤铁矿样品中氧化铁的质量分数,需要测量的数据是                                             

单项选择题

After winning a big game, athletes are often asked how they feel. Usually athletes say how (1) it is to win this big game. On the contrary, the fact is that losing a big game, or in my case, all the games, can be even harder.
From the spectators’ point of view, last year’s basketball (2) for my high school team was nothing (3) of an embarrassment. And (4) 0 and 20 is certainly nothing to be proud of, that season had a bigger impact on me than any other. As a team captain, I knew it probably wouldn’t be the (5) year, but did I ever think we would lose every game Of course not. Since six of our top players had graduated, it was clear that we were a (n) (6) team who would struggle. The struggle began earlier than expected, (7) , as our team center was suspended (禁赛) for the season, and two key members decided to (8) for some reason. At this point, dropping out probably passed through every player’s mind, but in the end, we all stuck if out, (9) to work still harder.
Then there came a time when even our (10) and given up on us. Personally, I felt like it was (11) worthwhile giving my all. I thought, if even the coach doesn’t believe in us, why should I But just as my hope began to (12) , a teammate called a meeting. He said," Nobody thinks we are going to win, but, as teammates and friends, we (13) it to each other to go all out every game. "
It was that moment that (14) me how to be a leader. It hit me that I certainly didn’t (15) the role. As a leader you can never quit (16) the team who looks up to you. It is one (17) to be named captain, feel great and go through the motions, but it is quite another to be a real captain and make sure everyone realizes their full (18) all the time.
I am sure it is great to go through without losing and bringing home awards. But in all honesty, I (19) the fact that my team lost every game last year. It may not help me to become a better basketball player, but it already has made me a better leader, and (20)

A.fans
B.classmates
C.sponsor
D.coach