下列哪项最有助于区别心绞痛与心肌梗死（） A.心电图变化 B.疼痛部位 C.疼痛性质 发布时间：2018-03-05 13:21 │ 来源：www.tikuol.com 题型：单项选择题 A1型题 问题： 下列哪项最有助于区别心绞痛与心肌梗死（）A.心电图变化B.疼痛部位C.疼痛性质D.有无发热E.有无心率增快
题型：单项选择题 A1型题 如下图所示，用伏安法测电阻R的阻值时，下列说法正确的是（ ）A．十分认真地进行测量，测量所得R值一定仍比真实值大B．只要认真进行测量次数足够多，那么测量所得R的平均值就会非常接近真实值C．设安培表内阻为RA，那么认真测量所得R值一定比真实值大RAD．认真测量所得R值一定比真实值小 查看答案
题型：单项选择题 A1型题 阅读理解A. Interest and importanceB. Positive expectationC. People can't have perfect memory.D. Memory is an active process.E. A relaxed mind helps memory.F. Control depression.1._____ Most of us express dissatisfaction with our memory, especially when we want to recall some detail and we can't.Some examples are, an address or a telephone number, the time of a meeting, somebody's name, etc.Even people who I think have an excellent memory, complain that they forget things.Memory works like a bank.You can get to it, only if you put it there.If you didn't deposit it, you can't collect it when you need it.It is described what we need to do to improve our memory in this article.2. ____ Recall of a particular event or detail depends on the interest we take and the importance we assign to that detail or event, at the time when it is taking place.We remember so much more about people, places, and topics which fascinate us.When you are greatly interested in a subject, you pay close attention and your brain releases chemicals to form deeper "imprints" on the cells that store memory.3. ____ The more active attention you pay, the more details you observe, the more you think, reason, and comprehend, the more associations you make of what you know with what you are trying to learn, the more you will retain and be able to recall, later on.Good memory is a state of the active mind.4. _____ Learn with a relaxed mind.Recall the learned material with a relaxed mind.Let's take as an example a situation where you misplace your car keys.If you get too anxious about yourself in trying to recall something, as is the case in this example, you are in for frustration.But, if you relax your mind, and calmly go through the events backward, you are more likely to remember where you left them.5. _____ Depression can make the interest and joy less in the events surroundings us.As a result, too little energy is left to recall anything.Some depressed persons become more anxious and depressed thinking, "I have lost my mind." Once depression is treated, memory as a general rule, returns to the normal. 查看答案
e events surroundings us.As a result, too little