题干

如图所示是小明探究“比较不同物质的吸热能力”的实验装置.为保证不同的物质能吸收相同的热量,甲、乙两个电阻丝的阻值必须____;实验时还要使这两种不同物质的初温和____都相同;如果甲瓶中液体温度升高的快,说明甲液体的吸热能力____(强/弱).

上一题 下一题 0.0难度 选择题 更新时间:2015-04-23 07:30:28

答案(点此获取答案解析)

相等,质量,弱

同类题1

    阅读下面材料,从每题所给的A、B、C、D四个选项中选出最佳选项。

B

    Life without chocolate is like a beach without water.You might be a chocolate lover but considering your health,you might be avoiding it now and then.But now you don't need to fear it anymore because we have found some ways to solve the problem.

    Chocolates are popular sweets all over the world but you might have seen mummies scolding kids for eating them and people giving long lectures on the disadvantages of chocolates.Chocolates with loads of milk and butter are quite unhealthy for us.They taste really good but the results are really bad.

    But remember where there is a will,there is a way.If you are a chocolate lover, do try dark chocolate which contains(含有)little sugar in it and is bitter in taste.

    There're also many other ways to make your favourite chocolate healthy and tasty.In fact,the bad thing about chocolate is that our body doesn't recognize(识别)it as a food but only a source of sweet in the body.

    But to make your body recognize chocolate as a food,you have to take chocolate by combining(结合)it with fruits and vegetables that are rich in vitamin C,such as blue—berries and strawberries,then it will give you full nutrients(营养)package to use all  tile iron free from chocolate.

    This combination will also satisfy your need.At the same time,you will be having a treat,a full healthy treat that you can have without any worry.

    So,remember if you're the one who can't stop yourself from having chocolate in sight,you must go for these,which not only bring you more taste but more healthiness.