问题
单项选择题
免维护蓄电池，也称MF蓄电池，在使用过程中不需作任何（）或只需较少的维护工作。即能保证蓄电池的技术状况良好和一定的使用寿命。
A、充电
B、维护
C、放电
答案
参考答案：B
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免维护蓄电池，也称MF蓄电池，在使用过程中不需作任何（）或只需较少的维护工作。即能保证蓄电池的技术状况良好和一定的使用寿命。
A、充电
B、维护
C、放电
参考答案：B
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| Many children have birthday cakes on their birthdays. In some 1______, like England and Scotland, there is another custom, too. People beat or hit the2______on his/her birthday. This may hurt3______, but they say it is very lucky for the child. The child must 4______cry. The custom says, if you5 ______, you will cry all year. They say the birthday spanks (一巴掌) is to make the bad spirits(邪气)6 ______. The harder you spank the better. In Belgium, another country in Europe, the custom is a little7 _____. There a parent goes into the child’s room8 ______in the morning with a needle. As soon as the child 9______ up, the parent pricks(刺) the child with the needle. This is for good 10______. | ||||
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