放射工作许可登记证的核查时间为()。 ["每年","一到两年","两到三年","三到四年","四到五年"]
应急照明控制器应安装在()。 ["消防控制室","楼道","休息室","会议室","值班室"]
旅馆建筑照明标准值下列哪个地方最高?() ["西餐厅、酒吧间、咖啡厅","中餐厅","客房写字台","洗衣房"]
预计个人职业照射剂量大于多少mSv/a(年)才需要进行个人剂量监测()。 ["1","5","10","50","100"]
下列不是取出宫内节育器指征的是() ["节育器异位","男方或女方已做绝育术","绝经1年","宫颈Ⅱ度糜烂","计划再生育"]
《砌体规范》6.1.2条第3款对圈梁的规定,如何理解?