【判断题】【消耗次数：1】
养成良好的个人卫生习惯，应该勤洗手、常洗澡、不共用毛巾和洗漱用具
①
正确
②
错误
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【单选题】
学前儿童养成良好的用眼习惯，以下说法正确的是（ ）
①
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②
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③
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④
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【单选题】
学前儿童养成良好的用眼习惯，以下说法正确的是（ ）
①
Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable
【单选题】
学前儿童养成良好的用眼习惯，以下说法正确的是（ ）
①
Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable
随机题目
【单选题】
烧结多孔砖是指（ ）。
①
以粘土、页岩、煤矸石为主要原料，经焙烧而成的主要用于承重部位的多孔砖
②
以黏土、页岩、煤矸石、粉煤灰等为主要原料，经成型、焙烧而成孔洞率不大于15%的砖
③
以黏土、页岩、煤矸石为主要原料，经焙烧而成的主要用于非承重部位的空心砖
④
以黏土、页岩、煤矸石为主要原料，经焙烧而成的主要用于非承重部位的空心砌块
【单选题】
冷弯性能是指（ ）。
①
钢材在常温下承受弯曲变形的能力，是钢材的重要工艺性能
②
其表面抵抗重物压入产生塑性变形的能力
③
指焊接后在焊缝处的性质与母材性质的一致程度
④
塑性变形能力
【单选题】
国家标准《烧结普通砖》GB5101—2003规定，凡以黏土、页岩、煤矸石、粉煤灰等为主要原料，经成型、焙烧而成的实心或孔洞率不大于15%的砖，称为（ ）。
①
烧结普通砖
②
烧结黏土砖
③
烧结煤矸石砖
④
烧结页岩砖
【单选题】
根据脱氧程度不同，浇铸的钢锭可分为沸腾钢（F）、镇静钢（Z）、半镇静钢（ ）、特殊镇静钢（TZ），其中脱氧程度最差的是（ ）。
①
沸腾钢
②
镇静钢
③
半镇静钢
④
特殊镇静钢