题目内容
测试电路各引脚对地电压时应接通直流电源，将输入信号旋钮调至零。
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静态测试接通电源前，应先将输入端短路接地，以免感应信号时静态电流过小。
当负载一定时，希望功放输出功率大、效率高、非线性失真小。
测量功放LM386的静态总电流时，应将仪表串接在电源和LM386的电源脚之间。
In foreign trade business, it is (1)___________and importantto invite the foreign business people to visit your plant orfactory. The visit can make some contributions to further development of the (2)_____________and to the finalreach of agreement.During the visit, you may show the guests aroundthe factory and the workshop so rsometimes (3)______________. You need to give your guests a general picture of your plant includingits history, employment and management, etc. Besides a (4)___________ of your productioncapacity, annual output or even a show of your (5)____________ will be expected appreciated bythe foreign guests.
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