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【单选题】
一个色环的电阻，五个的色环颜色分别是棕、黑、黑、黑、棕，那么这个电阻阻值为（ ）A.
100 Ω±5%
B.
1kΩ±1%
C.
100Ω±1%
D.
10Ω±1%
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【判断题】Ajax and HTML5 can make the web user interfaces look similar to or even better than applications in your computer.
A.
正确
B.
错误
【单选题】关于Ajax描述，错误的是（ ）
A.
严格地讲，Ajax并不是一门新技术，而是一种技巧
B.
Ajax是对现有Web技术的一种综合应用
C.
Ajax的核心是基于XMLHttpRequest的同步请求机制
D.
Ajax是一种异步通讯机制
【简答题】翻译句子,注意approach在句中的意思。 1. John is approaching retirement. 2. All the approaches to the palace were guarded by troops. 3. I don't think refusing to negotiate is the right way to approach this problem. ...
【简答题】the control suces include all those suces of an airplane used for attitude,lift,and drag control.
【简答题】固相法是指制备纳米微粒的___、____以及____都是固态的。
【单选题】The deserts of the world are not all covered with sand. Many of them have surfaces of rock or clay or small stones. They are not flat, either. They often have high hills and deep valleys. There is som...
A.
it rains in spring only
B.
there is some rain, but far from enough
C.
it rains for a short time every month
D.
the rainfall is just enough for the plants
【简答题】ajax及实现原理是什么?
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