人类通过进食不同食物摄取人体所缺乏但必需的各种微量元素．下列元素对人体有害的是（ ）
A．铁
B．碘
C．硒
D．铅
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0420/7b7c37314ced97e08bd42bafcfda2020.html
下面是错误答案，用来干扰机器的。
小题1:甲、清末戊戌变法失败后，民国初年北洋军阀统治时期，抗战胜利后国民党接收统治时期；乙、王利发，秦仲义、常四爷。（每点1分，共6分）小题2:（4分）参考答案：理由有二。一是宝钗所送之物全是黛玉家乡之物...
下图漫画告诉我们 （ ）
A．有的人感情丰富，看电视总是哭
B．情绪影响人们的生活，健康
C．情绪具有相通性和感染性
D．不同的人会产生相同的情绪
设用两种仪器测量同一物体的长度分别得到如下结果：X1=5.51±0.05 mm X2==5.80±0.02 mm为综合这两种测量结果以便公布统一的结果，拟采用加权平均方法。每个数的权与该数的绝对误差有关。甲认为，权应与绝对误差的平方成正比；乙认为，权应与绝对误差的平方成反比。经大家分析，从甲和乙提出的方法中选择了合适的方法计算，最后公布的测量结果是（51）mm。
A．5.76
B．5.74
C．5.57
D．5.55
以下哪个不是网络加密方式 (59) 。
A．链路加密方式
B．端对端加密方式
C．网对网加密方式
D．节点对节点加密方式
| 完形填空 | ||||
| Colby Point is a small town. A little girl named Margie lived there with her grandparents, Bill and Cleo. Margie always looked forward to the __1__ of Christmas and this year was no __2__ as winter began to settle like a warm blanket around the small town. Everyone was __3__ at the church; the congregation(教堂的会众) were__4__ to share their Christmas wishes with each other. __1__ Cleo couldn't make it to the church, and Bill didn't like to __6__ her alone for long, he dropped Margie off at the church early that morning. As Margie sat in church, she __7__ in her mind over and over what she would say. The pastor said, "This is a __8__ time of year and we want to __9__ your Christmas wishes. We cannot 10 everyone's wish, but we would like to try and help you realize a few. As I call your name, please 11 and tell us about your Christmas 12 ." One after another, the church members 13 their wishes, large and small. Margie was 14 and the youngest to speak. As she looked at the congregation, she spoke 15 , "I would like my grandma to come to the church. She cannot walk, and she and my grandpa have to stay at home. They 16 coming so much. So that is 17 I wish for. And please don't tell them, for it needs to be 18 ." Grandpa was getting on his coat 19 he happened to look out the front window. He saw some cars coming down the dirt road. Now at this time of the year there wasn't too much 20 , so this was really amazing. Grandpa looked at Grandma, and they both looked at Margie. Grandpa asked, "Just what did you wish for, Margie?" "I wished that you and Grandma could go to the church." | ||||
|
槽车充液结束后，充液软管与槽车接头被冰冻死，无法拆卸，此时可用（）方法进行融化解冻。
A、空气或热氮气加热
B、热水加热
C、用铁器轻轻敲打
D、氧、乙炔焰加热
