短时间内危及人生命安全的最小电流为50mA

1、正确
2、错误
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正确答案:

正确

答案解析:

暂无解析

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Rockmusicusually____theyoungpeopleinmostcountries.

A、appliesto
B、appealsto
C、amazes
D、actress

PartIVTranslation

Notmanyofthechildrenoffertheirfatherssomepresents.ButtheAmericanfathersstillthinktheyaremuchbetterfatedthanthefathersofmanyothercountries,whohavenotevenadayfortheirsakeinnameonly.(PassageThree)

正常胎动为

InwhatwaydoesLauraLenox-Conynghammakeherliving?

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D、Bypreparingfoodforphotographsforsomemagazines

Whiledoingcalculationfortheproject,thedesigners____anewsolutiontoageologicalproblem.

A、fellinto
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C、setout
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