问题
多项选择题
电容器是各种电子设备中不可缺少的重要元器件,它广泛用于()等多种场合;
A、抑制电源噪声
B、提高输出能力
C、尖峰的吸收
D、滤波
答案
参考答案:A, C, D
电容器是各种电子设备中不可缺少的重要元器件,它广泛用于()等多种场合;
A、抑制电源噪声
B、提高输出能力
C、尖峰的吸收
D、滤波
参考答案:A, C, D
There are many things that you should be careful with when you are alone at home. Read the following solutions to protect yourself. Keep the door locked when you are alone at home. Many people think it’s the best way to protect themselves. Keep a list of phone numbers to call for help-such as 110, the police station or a neighbor’s number. Be careful with the electrical appliances(电器). If don’t know how to use them, ask your parents. Make a safety check before going to sleep. Look through the keyhole when you hear the doorbell. If there are strangers, ask “Who’s that?” with the door locked and say “Come back later.” Don’t tell them that your parents are away. Say “Mum’s having a shower.” or “Dad’s having a sleep.”
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