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问题 单项选择题

防尘防水等级IP66的第二个6的意思是（）。

A、完全防止外物入侵，虽不能完全防止尘灰进入，但侵入的尘灰量并不会影响灯具的正常工作。

B、完全防止外物入侵，且完全防止尘灰进入。

C、承受猛烈的海浪冲击或强烈喷水时，电器的进水量应不致达到有害的影响

D、浸在水中一定时间或水压在一定标准以下能够确保不因进水而造成损坏

答案

参考答案：C

翻译题

根据短文内容和所给中文提示，写出短文空白处各单词的正确形式。每空限填一词。

Nowadays , many families ___小题1:____(有) only one child . Parents will do ___小题2:___(每件事) to make their children study well . Is it good for them ?

Compare __小题3:___(和) those in the past , the children today are quite _小题4:___(不同的) from those in the past . In the past , children went to school by themselves and did ___小题5:___(家务) after school . Then , when they grew up , they ___小题6:____(能够) solve many problems by themselves .___小题7:__(然而) , in modern society children are ___小题8:___(送) to school and picked up after school . When growing up , they can ____小题9:___(几乎不) overcome their problems ,please __小题10:___(改变) your ways in order that your children can achieve a lot in the future .
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单项选择题

加强对城市供水、燃气、供暖设施的管理和（）工作，维护人民群众正常的生产和生活秩序。

A.检查指导

B.保养维护

C.安全防范
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