【单选题】
治安防范系统出现故障时，应在___小时内恢复功能。
A. 24
B. 36
C. 48
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答案
C
解析
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未按照规定建立民用爆炸物品登记制度，如实将本单位生产、销售、购买、运输、储存、使用民用爆炸物品的品种、数量和流向信息输入计算机系统的，由公安机关责令限期改正，处___的罚款；逾期不改正的，责令停产停业整顿。
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起爆电子雷管需要专门的起爆设备并需要通过___识别，如密码正确则启动内置的延期程序，达到规定的延期时间后，才输出强的电流信号引爆雷管。
A. 数字
B. 密码
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在煤矿许用电雷管中，雷管的外壳不准使用铝金属，这是因为___。
A. 铝壳雷管起爆能量较低，有时不能使炸药爆炸
B. 铝金属属于有色金属，使用了会增大雷管的制造成本
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D. 铝壳雷管在起爆炸药过程中，形成炽热颗粒能引爆瓦斯和煤尘
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炸药在岩土等固体介质中爆炸后，在岩石中将形成以炸药为中心的由近及远的不同破坏区域，分别称为___及弹性振动区。
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Which of the following statements is Not True? ___
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Which of the following public places is NOT mentioned that have banned mobiles? ___
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What happened to the man? ___
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Which of the following is NOT true? ___
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Which of the following is true? ___
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What kind of things has its own reason for existing? ___
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To the speaker, what kind of things always win in life? ___
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What is the attitude of Mrs. Washington? ___
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甲男与乙女系出自同一外祖父母的表兄妹，后来乙女被他人收养。根据我国婚姻法的规定，他们___
A. 可以结婚
B. 如果双方不生育子女可以结婚
C. 不能结婚
D. 以上均不正确
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某甲与某乙已登记结婚，但未同居，也未举行婚礼。之后某甲后悔与某乙结婚，进行下列（ ）行为后，婚姻关系才能解除。___
A. 调解
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C. 离婚
D. 撤销结婚登记
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甲乙夫妻经协商同意离婚，甲因出差委托丙去离婚登记机关代为办理离婚登记手续，依我国法律，丙___
A. 可以代理
B. 在甲乙双方同意下可以代理
C. 在取得甲授权委托书的情况下可以代理
D. 不能代理
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甲乙结婚后购得房屋一套，仅以甲的名字进行了登记。后甲乙感情不和，甲擅自将房屋以时价出售给不知情的丙，并办理了房屋所有权变更登记手续，下列正确的是___
A. 买卖合同有效，房屋所有权未转移
B. 买卖合同无效，房屋所有权已转移
C. 买卖合同有效，房屋所有权已转移
D. 买卖合同无效，房屋所有权未转移
