在审理涉外民商事案件时，根据中国的冲突规范应适用某外国法时，应适用该外国的( )。A

如图所示，在水平面内的直角坐标系xoy中有一光滑金属导轨AOC，其中曲线导轨OA满足方程，长度为的直导轨OC与x轴重合，整个导轨处于竖直向上的匀强磁场中。现有一长为L的金属棒从图示位置开始沿x轴正方向做匀速直线运动，已知金属棒单位长度的电阻为R₀，除金属棒的电阻外其余电阻均不计，棒与两导轨始终接触良好，则在金属棒运动过程中，它与导轨组成的闭合回路

A．电流逐渐增大

B．电流逐渐减小

C．消耗的电功率逐渐增大

D．消耗的电功率逐渐减小

语句“DELETE FROM 成绩表 WHERE计算机＜60”的功能是

A．物理删除成绩表中计算机成绩在60分以下的学生记录

B．物理删除成绩表中计算机成绩在60分以上的学生记录

C．逻辑删除成绩表中计算机成绩在60分以下的学生记录

D．将计算机成绩低 60分的字段值删除，但保留记录中其它字段值

Children start out as natural scientists, eager to look into the world around them. Helping them enjoy science can be easy; there’s no need for a lot of scientific terms or expensive lab equipment. You only have to share your children’s curiosity. Firstly, listen to their questions. I once visited a classroom of seven-year-olds to talk about science as a job. The children asked me "textbook questions" about schooling, salary and whether I liked my job. When I finished answering, we sat facing one another in silence. Finally I said, "Now that we’re finished with your lists, do you have questions of your own about science"

According to the passage, children can answer questions in a more logical, complete and creative way if adults ______.
A. ask them to answer quickly
B. wait for one or two seconds after a question
C. tell them to answer the next day
D. wait at least for three seconds after a question

After a long pause, a boy raised his hand, "Have you ever seen a grasshopper eat When I try eating leaves like that, I get a stomachache. Why"
This began a set of questions that lasted nearly two hours.
Secondly, give them time to think. Studies over the past 30 years have shown that, after asking a question, adults typically wait only one second or less for an answer, no time for a child to think. When adults increase their "wait time" to three seconds or more, children give more logical, complete and creative answers.
Thirdly, watch your language. Once you have a child involved in a science discussion, don’t jump in with "That’s right" or "Very good". These words work well when it comes to encouraging good behavior. But in talking about science, quick praise can signal that discussion is over. Instead, keep things going by saying "That’s interesting" or "I’d never thought of it that way before", or coming up with more questions or ideas.
Never push a child to "Think". It doesn’t make sense, children are always thinking, without your telling them to. What’s more, this can turn a conversation into a performance. The child will try to find the answer you want, in as few words as possible, so that he will be a smaller target for your disagreement.
Lastly, show; don’t just tell. Real-life impressions of nature are far more impressive than any lesson children can learn from a book or a television program. Let children look at their fingertips through a magnifying glass, and they’ll understand why you want them to wash before dinner. Rather than saying that water evaporates, set a pot of water to boil and let them watch the water level drop.

缺铁性贫血时，不是体内一有缺铁即很快出现贫血，要经过以下三个阶段： _________ 、 _________ 、 _________ 。

什么叫抽提塔的过孔速率？