氰化物中毒的主要毒作用机制是（） A.阻碍血红蛋白释放氧 B.使血红蛋白形成高铁红蛋

在Access查询对象中设置查询准则时，下列关于查询条件的说法中错误的是( )

A．日期/时间类型数据需在两端加#

B．文本与备注型字数格式＜：表示将输入字符以小写显示

C．货币型字段可以指定小数位，并影响内部实际保存的小数位

D．是/否格式有3种格式可供选择

水平角是经纬仪置测站点后，所照准两目标的视线，所形成的夹角。

两河流域位于今天的（）

A、印度

B、苏丹

C、伊拉克

D、南斯拉夫

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)

15().

A．act

B．deserve

C．play

D．take

为何测电池电动势要用对消法？对消法的原理是什么？