单选题
发布日期:2021-03-22
an electrical interlock system
an automatic paralleling trip switch
the synchronizing oscilloscope
the reverse current relay
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世界卫生组织(WHO)是联合国专门从事国际卫生工作的机构,其宗旨是。()
已知:,则x+2+=( )。
引起蛛网膜下腔出血的常见原因是()
根据《建筑玻璃应用技术规程》JGJ113-2015浴室用玻璃下列规定正确是:()
称为“数字摘要法”的数字签名方法是()
国库券是一种几乎没有风险的有价证券,其利率可以代表货币时间价值。( )[2003年真题]
保安等级“3”系指应始终保持最低限度的适当防范性保安措施的等级。
施工现场运输道路应布置成()路,否则应设置倒车场地。
下列部位最容易发生骨骺损伤的部位是()。
可摘局部义齿有两种区别显著的类型,一种为肯氏Ⅰ类和Ⅱ类义齿,一种为肯氏Ⅲ类义齿,两者之间存在显著差异,以下说法错误的是()。
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