问题
选择题
某家庭电路中的保险丝熔断后，换上新的保险丝又立即熔断，则下列因素中不可能造成这种故障的是 [ ]
A．电路中某处发生断路
B．电路中某处发生短路
C．电路中的用电器总功率过大
D．保险丝的额定电流过小
答案
答案：A
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某家庭电路中的保险丝熔断后，换上新的保险丝又立即熔断，则下列因素中不可能造成这种故障的是 [ ]
A．电路中某处发生断路
B．电路中某处发生短路
C．电路中的用电器总功率过大
D．保险丝的额定电流过小
答案：A
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It's __2__ your teeth are important in many ways. Take care of them, and they'll help to take care of you. Strong, __3__ teeth help you grow. They also help you speak clearly. You can take pate of your teeth by doing like these: Brush your teeth __4__ a day, after getting up and before bedtime. And you brush all of your teeth, not just the front ones. Spend some time __5__ the teeth along the sides and in the back. Take your time while brushing. Spend at __6__ three minutes each time you brush. Be sure your toothbrush is soft. Ask your parents to help you get a new toothbrush. __7__, three months. Clean between your teeth with dental floss (牙线). It feels strange when you do it at first, but soon you'll get used to __8__ it. Brushing __9__ your teeth healthy. You also need to care about what you eat and drink. Eat __10__ fruits and vegetables and drink water instead of drinks. Do you want to have white and healthy teeth? Please brush your teeth! | ||||
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