医院、宾馆等公共场所普遍使用高温高压蒸气消毒锅对物品消毒。图（甲）为自动测定锅内温度的电路原理图，其中R0为定值电阻，A为温度指示表（实质是一只量程为0~0.6A的电流表），Rx为热敏电阻（其电阻值随锅内温度的变化而变化）。关于热敏电阻的阻值与温度的对应关系如下表所示。
| 锅内温度值/℃ | 25 | 37.5 | 50 | 62.5 | 75 | 87.5 | 100 | 112.5 | 125 |
| Rx对应的电阻值/Ω | 150 | 80 | 50 | 30 | 20 | 15 | 10 | 7 |
（1）6V；5Ω
（2）5Ω
（3）300g
阅读下列短文，根据短文中的信息完成文后表格。（每空一词） What do we really mean by being open? Being open is a kind of invitation to others to come in, to speak and to share. It is important in letting others get to know how we think and feel. In this way we will be understood and accepted by others. If we aren’t open with others, we won’t fully believe in ourselves or others. Here are a few ways for you to be more open. First, make your outside behavior the same with your inside feelings and thoughts. Second, share how you really feel about something instead of just opinions. Third, try to change your questions into statements(陈述句) and talk in the first person so that people will understand you more easily. For example, you might say, “I feel happy that you’re here,” instead of, “Are you glad that you’re here?” Finally, try not to say, “I don’t know.” This usually means I don’t want to think about it anymore. Remember also that it is not suitable to be open with everyone in every situation. You may want to be more open with close friends, but not with people you don’t know well, because you are not sure how someone else will use what they know about you. Besides, some people may not be used to too much openness. If we say everything we feel or think to them, they will feel very uncomfortable at times. In all, being open is a good way for us to get on well with other people, but we’d better keep the balance between being open and not being too open.
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