Before a big exam, a sound night’s
sleep will do you more good than poring over textbooks. That, at least, is the
folk wisdom. And science, in the form of behavioral psychology, supports that
wisdom. But such behavioral studies cannot distinguish between two competing
theories of why sleep is good for the memory. One says that sleep is when
permanent memories form. The other says that they are actually formed during the
day, but then "edited’’ at night, to flush away what is superfluous. To tell the difference, it is necessary to look into the brain of a sleeping person, and that is hard. But after a decade of painstaking work, a team led by Pierre Maquet at Liege University in Belgium has managed to do it. The particular stage of sleep in which the Belgian group is interested in is rapid eye mov A. how dreams are modified in their courses B. the difference between sleep and wakefulness C. why sleep is of great benefit to memory D. the functions of a good night’s sleep [判断题]我国颁布并实施的化妆品卫生标准、化妆品卫生监督条例及化妆品卫生规范,可以据此识别产品质量的优劣。
A.正确 B.错误 [单选题]7 股导线中 2 股、19 股导线中 5 股、35~37 股导线中 7 股损伤深度超过该股导线的 1/2 ;钢芯铝绞线钢芯断 1 股者;绝缘导线线芯在同一截面内损伤面积超过线芯导电部分截面的 17%;属于()。
A.紧急缺陷 B.危急缺陷 C.严重缺陷 D.一般缺陷 [判断题]气瓶的质量保证期必须是一年。
A.正确 B.错误 [单项选择]有以下程序:
#include <iostream.h> #include <iomanip.h> void main( ) double d=123.456789; cout<<setprecision(3)<<d<<","; cout<<setprecision(4)<<d<<","; cout<<setprecision(5)<<d<<endl; 程序执行后的输出结果是( )。 A. 123,123.4,123.45 B. 123,123.5,123.46 C. 123,123.,123.4 D. 123.456789,123.456789,123.456789 [多项选择]关于内地与台湾地区之间法院判决的认可,依1998年实施的最高人民法院《关于人民法院认可台湾地区有关法院民事判决的规定》,下列选项中哪些是正确的( )
A. 上述规定同样也适用于认可台湾地区仲裁机构所作出的仲裁裁决 B. 当事人应当在判决发生效力后1年内申请人民法院认可 C. 认可的申请应由有管辖权的中级人民法院受理 D. 当事人申请认可台湾地区的民事判决而就同一事实又向人民法院起诉的,人民法院应予受理 [判断题] 任何组织或者个人不得以任何理由在任何情况下侵犯公民的通信自由和通信秘密
A.正确 B.错误 [判断题]列车和单机由值班员负责指挥。(技规)
A.正确 B.错误 [单选题]线路上发现钢轨重伤连续伤损应如何标记( )。
A.△△△ B.↑△△△ C.丨←△△→丨 D.丨←△△△→丨 [判断题]空压机检查油位时,应在空压机停机20分钟内,并保证动车组空压机各运行5分钟以上。
A.正确 B.错误 [单选题]( )作为保证安全的制度措施之一,包括工作票、工作的许可、监护、间断、转移和终结等。
A.质量措施 B.技术措施 C.安全技术措施 D.安全组织措施 [单选题]单选题交换剂层在制水或再生过程中被托起的离子交换器叫( )。
A.固定床离子交换器 B.浮动床离子交换器 C.移动床离子交换器 D.流动床离子交换器 [判断题]若某节动车电制动失效,则被认为拖车分配气制动力。 ( )
A.正确 B.错误 我来回答: 提交
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