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串电阻降压启动KM1、KM2同时得电，主电路会短路。
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虚拟设备驱动程序的文件扩展名为.VXD，VXD中间的“X”表示【 】。
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Practise preparing short talks on the topics below and on the next pagE.
Task Sheet One
A WHAT IS IMPORTANTWHEN...?
Advertising a product or service
- Appropriate media
- Competition
B WHAT IS IMPORTANT WHEN... ?
Preparing to attend a conference
- Information about the speakers
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C WHAT IS IMPORTANTWHEN...?
Setting targets
- Staff morale
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Task Sheet Two
A WHAT IS IMPORTANTWHEN...?
Managing staff
- Motivation
- Experience
B WHAT IS IMPORTANTWHEN...?
Attracting investment
- Strategic planning
- Public relations
C WHAT IS IMPORTANTWHEN...?
Preparing for a product launch
- People involved
- Costs
单项选择题
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