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问题 多项选择题

通过（）方法，可以选中一个帧。

A.单击所要选中的帧。

B.单击“FrameInspector”中的代表图像。

C.按下“Alt”键并用鼠标在所要选中的帧上单击。

D.单击所要选中的帧的左上角。

答案

参考答案：B, D

单项选择题 案例分析题

Wise buying is a positive way in which you can make your money go further. The （）you go about purchasing an article or a service can actually （）you money or can add （）the cost.

Take the （）example of a hairdryer. If you are buying a hairdryer, you might （）that you are making the （）buy if you choose one （）look you like and which is also the cheapest （）price. But when you get it home you may find that it （）twice as long as a more expensive （）to dry your hair. The cost of the electricity plus the cost of your time could well （）your hairdryer the most expensive one of all.

So what principles should you （）when you go out shopping?

If you （）your home, your car or any valuable （）in excellent condition, you’ll be saving money in the long （）

Before you buy a new （）,talk to someone who owns one. If you can, use it or borrow it to check it suits your particular （）

Before you buy an expensive （）,or a service, do check the price and （）is on offer. If possible, choose （）three items or three estimates.

请在第（）处填上正确答案。

A.products

B.possession

C.material

D.ownership
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单项选择题

在一次图编辑器中对有支线的线路拓扑后显示拓扑结果时，电流的展示方向是（）

A.先支线后干线

B.干线支线同时进行

C.先干线后支线
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