When lab rats sleep, their brains revisit the maze they navigated during the day, according to a new study (1) yesterday, offering some of the strongest evidence (2) that animals do indeed dream. Experiments with sleeping rats found that cells in the animals’ brains fire in a distinctive pattern (3) the pattern that occurs when they are (4) and trying to learn their way around a maze.
Based on the results, the researchers concluded the rats were dreaming about the maze, (5) reviewing what they had learned while awake to (6) the memories.
Researchers have long known that animals go (7) the same types of sleep phases that people do, including rapid-eye-movement (REM) sleep, which is when people dream. But (8) the occasional twitching, growling or barking that any dog owner has (9) in his or her sleeping pet, there’s been (10) direct evidence that animals (11) A. complex
B. confused
C. vigorous
D. instantaneous
| The Chinese have used a method called
acupuncture(针炙) to perform operations for about 4,000 years without putting the
patient to sleep. This involves placing flexible needles into certain parts of
the body. The needles are available in a number of stores in China and anyone
may buy them. To learn how to use the needles takes about one month of training. But to be skillful requires greater time. (79) The person who performs the acupuncture knows how to put in the needles so the needles themselves are not painful. This person also knows where to place the needles so the patient feels no pain in the area where the operation is to be performed. A particular operation might require 25 or more needles placed in various parts of the body. But now this operation requires only 3 or 4 needles. Today, the Chinese doctors are tryin A. several months B. a couple of weeks C. a little time D. almost one month [单选题]配电站、开闭所、箱式变电站等的钥匙至少应有（ ）。
A.A.一把 B.B.二把 C.C.三把 D.D.四把 [单项选择]赵某与钱某约定，赵某以1000元的价格购买钱某的耕牛。当夜，耕牛被孙某盗走，致使合同因无法履行而终止，钱某返还赵某价款。该事例中，导致合同解除的法律事实是（）。
A. 孙某盗窃耕牛的行为 B. 耕牛被盗事件 C. 合同无法履行的事实 D. 钱某返还价款的行为 [单选题]关于作业现场，下列说法正确的是（ ）。
A. A.地面的配电变压器应有箱式外壳或安全围栏，并设置“禁止攀登，高压危险！”等标示牌 B. B.某施工人员为便于施工，临时拆除了某带电线路避雷器的接地扁铁 C. C.两名工作人员巡视设备时，看到前方有带电导线落在地上，两人快速走近断线点检查原因 D. D.环网柜应在停电、验电、合上接地刀闸后，方可打开柜门 [填空题]（）的出现被认为是心理发生的标志，也可以笼统地把新生儿时期视为心理发生的时期。
[判断题]当被保护线路反方向故障时，靠近故障点的高频闭锁方向保护发出高频闭锁信号，将两端保护闭锁。
[单选题]下列各类市场中，不属于货币市场组成部分的是（ ）。
A.回购市场 B.同业拆借市场 C.股票市场 D.票据贴现市场 [单选题]我国现有能源生产结构中,哪种可再生能源所占份额最大?( )
A.太阳能 B.水能 C.风能 D.地热能 [多选题]钢结构工程,用于吊装的( )等吊具应经检查合格,并应在其额定许用荷载范围内使用。(GB50755—2012《钢结构工程施工规范》11.2.6)
A.钢丝绳 B.吊装带 C.卸扣 D.吊钩 [简答题]说明美国政府努力鼓励技术知识进步的两种方法。
[单选题]在同杆塔架设多回线路中部分线路停电的杆塔上进行工作时,在停电线路一侧吊起或向下放落工具、材料等物体时,应使用( )传递,物件与带电导线的安全距离应符合表4的规定。
A. 绳索, B. 绝缘绳索, C. 绝缘无极绳圈, D. 钢丝绳 [单项选择]一般给水管（冷水）管道法兰连接时法兰盘连接衬垫采用厚度（）的橡胶垫
A. 2mm B. 3mm C. 4mm D. 5mm [简答题]它每年的发电量，除了供给吉林市使用外，还向长春、哈尔滨等地输送。
[判断题]为保证汽轮机的安全，甩负荷时，超速保护应迅速动作，以使汽轮机停机( )
A.正确 B.错误 [单选题]根据《建设项目安全设施“三同时”监督管理办法》，施工单位对危险性较大的分部分项工程依法编制专项施工方案，并附具安全验算结果，经 ( )签字后实施
A.施工单位负责人、总监理工程师 B.施工单位负责人、建设单位负责人 C.施工单位技术负责人、建设单位技术负责人 D.施工单位技术负责人、总监理工程师 [判断题]线路经常维修的基本作业包括起道、拨道、清筛道砟等。( )
A.正确 B.错误 我来回答: 提交
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