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【多选题】
下列哪些属于燃料电池的优点？A.
能量转换效率高
B.
环境友好
C.
可循环利用
D.
燃料多样
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举一反三
【简答题】十进制数[25.625] 10 的二进制数为______；
【简答题】十进制数86的8421BCD码为______，余3码为______；(11.25) 10 的二进制数为______，十六进制数为______。
【简答题】十进制数[12.75] 10 的二进制数为______；
【单选题】What is the style of the following paragraph development? Subject A--Point 1--Point 2--Point 3 --- Subject B --- Point 1 ---Point 2---Point 3
A.
Subject-by-subject pattern
B.
Point-by-point pattern
【简答题】What is the speaker's main point?
【单选题】What is the main point the author makes about the cultivation of the students' imitation capacity?
A.
It depends on the students' own effort.
B.
It relies on the teacher's technique to present speech models.
C.
The teacher himself must be a perfect speech model.
D.
The teacher must treat it as a matter of primary importance.
【单选题】What is the 'critical point' mentioned in the last paragraph?
A.
The point at which a computer is an exact copy of a human brain.
B.
When a computer can be made as creative as we are.
C.
When one computer itself is clever enough to design a better one.
D.
When computers destroy each other in an explosion.
【简答题】When point G is added, DEFG is square. What are the coordinates of point G?
【单选题】If A is the point (-4, 1) and B is the point (2, 1), what is the area of the circle which has AB as a diameter?
A.
3π
B.
6π
C.
9π
D.
12π
E.
36π
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