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{{B}}Sleep{{/B}} We all know that the normal human daily cycle of activity is of some 7 - 8 hours’ sleep alternating with some 16 - 17 hours’ wakefulness and that, broadly speaking, the sleep normally coincides with the hours of darkness. Our present concern is with how easily and to what extent this cycle can be modified. The question is no mere academic one. The case, for example, with which people can change from working in the day to working at night is a question of growing importance in industry where automation calls insistently for round-the-clock working of machines. It normally takes from five days to one week for a person to adapt to a reversed routine of sleep and wakefulness, sleeping during the day and working at night. Unfortunately, it is often the case in industry that shi A. people hate the inconvenience of working on night shifts. B. your life is disturbed by changing from day to night routines and back. C. not all industries work at the same hours. D. it is difficult to find a corps of good night workers. [判断题] Windows 7中,要彻底删除任何一个软件,可以通过"计算机"将该软件包的所有文件全部删除.
A.正确 B.错误 [不定项选择题]在车门附近作业时需设置（ ）进行防护，防止意外坠落。
A.车门作业平台 B.登车梯 C.防护架 D.安全带 [多选题] 触电伤员如意识丧失，应在开放气道后用看、听、试的方法判定伤员有无呼吸。以下正确的是（）
A.看：看伤员的胸、腹壁有无呼吸起伏动作。 B.听：用耳贴近伤员的口鼻处，听有无呼气声音。 C.试：用颜面部的感觉测试口鼻部有无呼气气流。 D.若无上述体征可确定无呼吸。一旦确定无呼吸后，立即进行一次人工呼吸就行了。 [单选题]上消化道出血,可表现为呕血及黑便,主要取决于( )
A.出血的速度和量 B.出血部位和高低 C.病变的性质 D.凝血机制 [单选题]加热炉的使用单位，应建立加热炉的（ ）档案。( )
A.容器检测 B.设备使用 C.安全技术 D.维修保养 [判断题]根据《国家电网公司电能量关口管理办法》要求,省公司建设部负责组织本部管理电厂接入系统、新(改、扩)建输变电工程和变电站站用电关口计量系统的设计审查、建设、调试以及竣工验收。( )
A.正确 B.错误 [单项选择]检查牙隐裂的方法是（）。
A. 视诊探诊 B. 叩诊咬诊 C. 碘酊染色 D. 温度测验 E. X线检查 [单选题]甑盖开启时操作员与其他人员严禁靠近甑体边沿,防止甑盖开启时( )喷出伤害人体。
A. 水分 B. 酒分子 C. 蒸汽 D. 天然气 [单项选择]
A. power B. strength C. force D. capacity 我来回答: 提交
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