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【判断题】
不同波长的电磁波,能量是不同的,其大小顺序为微波>红外线>可见光>紫外线>X射线。
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】Which of the following statements is true?( )
A.
The White Nile is the trunk of the River Nile
B.
The White Nile is the trunk of the Blue Nile
C.
The White Nile is a branch of the Blue Nile
D.
The White Nile is a branch of the River Nile
【单选题】Which of these statements is true based on the information in the passage?
A.
The earth is one of the oldest planets in our galaxy.
B.
Most scientists believe that there is intelt life on other planets.
C.
Scientists are trying different ways to find signs of life on other planets.
D.
More advanced civilizations than ours have developed on other planets.
【简答题】England is the largest country in Britain. Its capital is London, which is on the Thames. The port of London is one of the greatest ports in the world. Ships from all countries go up and down the Tham...
【简答题】阅读下列材料后回答问题:一个体重50Kg的健康人,体内约含有2g铁,这2g铁在人体内不是以单质的形式存在,而是以Fe 2+ 和Fe 3+ 的形式存在.正二价铁离子易被吸收,给贫血者补充铁时,应给予含Fe 2+ 的亚铁盐,如硫酸亚铁.服用维生素C,可使食物中的Fe 3+ 还原成Fe 2+ ,有利于人体吸收. (1)在人体中进行Fe 2+ ① ② Fe 3+ 的转化时,①中的Fe 2+ 作______...
【简答题】It was a relief that his hard work ually gave him the result that he had long desired: He successfully discovered the cause of the disease.
【单选题】下列胶剂制备工艺流程,正确的是
A.
原料选择与处理 → 煎取胶液 → 滤过澄清 → 浓缩收胶 → 胶凝与切胶 → 干燥与包装
B.
原料选择与处理 → 煎取胶液 → 浓缩收胶 → 滤过澄清 → 胶凝与切胶 → 干燥与包装
C.
原料选择与处理 → 煎取胶液 → 胶凝 → 滤过澄清 → 浓缩收胶 → 切胶 → 干燥与包装
D.
原料选择与处理 → 煎取胶液 → 浓缩 → 滤过澄清 → 收胶 → 胶凝与切胶 → 干燥与包装
E.
原料选择与处理 → 煎取胶液 → 滤过澄清 → 浓缩收胶 → 干燥与包装
【简答题】It’s about 250 miles from the hills of west-central Iowa to Ehlers’ home in Minnesota. During the long trip home, following a weekend of hunting, Ehlers 41 about the small dog he had seen 42 alongside...
【简答题】A certain month has five Wednesdays and the third Saturday is the 18th. What is the date of the last Sunday of the month?
【单选题】What is the main idea of the third paragraph?
A.
Telecommunication technology is the cause of globalization.
B.
In the last two centuries, globalization has developed rapidly.
C.
Globalization will make the situation of a country unsteady.
D.
Rapid capital flight will quicken the speed of globalization.
【单选题】下列不属于亚健康状况的是
A.
疲劳综合征
B.
衰老
C.
更年期综合征
D.
艾 - 氏综合征
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