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[单选题]引起小儿佝偻病的主要原因是
A.缺钙
B.缺乏维生素D
C.甲状旁腺功能不全
D.食物热量和蛋白质不足
E.食物中钙、磷比例不当

热门试题:

[判断题]发烧患者服用大青叶泡开水对病情有用。
[单选题]肾小管性蛋白尿以下列何种蛋白为主
A.球蛋白
B.清蛋白
C.血红蛋白
D.纤维蛋白原
E.β2 微球蛋白
[单选题]在下列选项中,不属于Windows特点的是(  )。
A.友好的图形用户界面
B.使用方便
C.多用户单任务
D.系统稳定可靠
[单选题]搬运管子、工字铁梁等长形物件,应注意防止物件甩动,用车推时应绑好。
A.A.正确
B.B.错误
[单选题]待销毁凭证整理、收集齐全后,总行凭证管理员应统一造具销毁清单,会计部门报经( )审批,由会计、审计、监察保卫及其他相关部门组织人员进行监督销毁
A.理事长(董事长)
B.总行主任(行长)
C.分管会计业务领导
D.监事长
[单选题]2. "威马汽车科技集团有限公司质量方针中的宗旨是( )。
A.三不原则
B.制造质量
C.客户满意
D.满足并超越顾客期望
"
[多选题]下列选项中符合辨认规定的是( )。
A.辨认经过和结果,应当制作辨认笔录,由办案人民警察和辨认人签名或者捺指印
B.多名辨认人对同一辨认对象进行辨认时,应当分别进行
C.辨认违法嫌疑人时,被辨认的人数不得少于10人
D.对违法嫌疑人照片进行辨认的,不得少于12人的照片
[单项选择]宫颈糜烂面积在1/3以内,表面呈细颗粒状凹凸不平,诊断为宫颈糜烂()
A. 轻度,单纯性
B. 轻度,颗粒型
C. 中度,单纯型
D. 中度,颗粒型
E. 重度,单纯型
[单项选择]第一触角最长的桡足类是()。
A. 哲水蚤
B. 剑水蚤
C. 猛水蚤
D. 怪水蚤
[单选题] 电缆故障测距主要有电桥法.()和高压闪络法。
A.电容法
B.低压闪络法
C.低压脉冲反射法
D.高压脉冲反射法。
[单项选择]癌症,腹痛隐隐,腹内结块,便秘,大便带血,腰酸膝软,头晕耳鸣,视物昏花,五心烦热,口干咽燥,盗汗,形瘦纳差,舌红少苔,脉弦细数。辨证应属()
A. 膀胱癌湿热蕴毒证
B. 大肠癌瘀毒内阻证
C. 大肠癌脾肾双亏证
D. 大肠癌湿热郁毒证
E. 大肠癌肝肾阴虚证
[单项选择]

What does the future hold for the problem of housing A good (1) depends, of course, on the meaning of" future". If one is thinking in (2) of science fiction and the space age (3) at least possible to assume that man will have solved such trivial and earthly problems as housing. Writers of science fiction have (4) the suggestion that men will live in great comfort, with every (5) device to make life smooth, healthy and easy, (6) not happy. But they have not said what his house will be made of.
The problems of the next generation or two can more readily be imagined. Scientists have already pointed out that (7) something is done either to restrict the world’s rapid growth in population or to discover and develop new sources of food (or both), millions of people will be dying of starvation or, (8) , suffering from under feeding before this (9) is out. But nobody has worked out any plan for
A. only if
B. even if
C. in case
D. unless

[多选题] 使用安全带前应进行外观检查,需要检查的项目有:()
A. 组件完整、无短缺、无伤残破损
B. 金属配件无裂纹、焊接无缺陷、无严重锈蚀
C. 挂钩的钩舌咬口平整不错位,保险装置完整可靠
D. 铆钉无明显偏位,表面平整
[单选题]syds.属于高层民用建筑的是()。
A.高度超过20m的单层建筑
B.建筑高度超过24m的公共建筑或超过27米的住宅建筑
C.五层建筑
D.高度超过22米的单层建筑
[单项选择]资本家用来购买劳动力的那一部分资本不属于( )
A. 生产资本
B. 可变资本
C. 固定资本
D. 流动资本
[单选题]电缆导线截面积的选择是根据()进行的。(  )
A.额定电流
B.传输容量
C.短路电流
D.传输容量及短路电流
[单选题]PLC在用户程序执行阶段完成的主要工作是( )。
A.执行系统程序
B.执行用户程序
C.解释用户程序井产生相应结果
[判断题] 27.5kV 电缆、开关、避雷器、架空地线接地电阻值不应大于15Ω,零散的接触网支柱接地电阻值不应大于30Ω。( )(《普速铁路接触网运行维修规则》第174条)
A.正确
B.错误
[单项选择]行政处罚案件听证主持人应当是与当事人无直接利害关系的()。
A. 本案执法人员
B. 案件调查人员
C. 非本案执法人员
D. 非本案调查人员
[单项选择]If you live or plan to travel where Lyme disease is a problem, there are important facts you should know. For example, you can get bitten by the tick ( 扁虱) that carries the disease while out gardening, walking, even playing with your dog. And, if you don’t have any early symptoms, you might not know you have Lyme disease. You could be one of the few people who develop serious health problems. Left untreated, Lyme disease can lead to potentially serious joint and neurological (神经病的) conditions. Why put yourself or your family at risk
Now, there’s a vaccine (疫苗) that has been shown to be safe and effective in preventing Lyme disease. It’s called LYMErix. New LYMErix for people 15 to 70. As with any vaccine, LYMErix may not protect 100% of individuals. LYMErix may be associated with local reactions including redness and swelling, flu-like symptoms.
Ask your doctor about new LYMErix, or call toll free 1-888-LYMERIX, ext 200 for information.
Now is the time to begin building
A. suitable for people at any age
B. lined with no side effects
C. used to protect all people
D. a safe and effective way to prevent Lyme disease
[多选题]基坑支护安设固壁支撑时,支撑木板应严密靠紧于( )的两壁,并用支撑与支柱将其固定牢靠。
A.沟
B.槽
C.灌
D.坑
[多选题]塔机电气系统应设置( )、欠压、过压及失压保护。
A. 短路、过流保护
B. 断路、欠流保护
C. 零位保护
D. 电源错相及断相保护
[单项选择]幼儿以“故事”为线索开展的、具有一定结构和框架的游戏活动被称为()。
A. 角色游戏
B. 表演游戏
C. 结构游戏
D. 有规则游戏
[单选题]BA009 水处理单组有( )限流器。
A.1个
B.2个
C.3个
D.4个
[单选题](1分)【单选题】关于局麻药毒性反应的预防,下列哪项是错误的
A.采用皮内敏感试验
B.一次用量不超过限量
C.注药前先回抽有无血液
D.据病人具体情况或用药部位酌减剂量
E.如无禁忌,药液内加入少量肾上腺素
[判断题]离子化合物的配位数取决于离子最有效堆积。
[不定项选择题]共用题干 第二篇

High Stress May Damage Memory

According to a report issued in May 1998,elderly people who have consistently high
blood levels of cortisol (皮质醇)don't score as well on memory tests as their peers with
lower levels of the stress hormone. What's more,high levels of cortisol are also associated
with shrinking of the hippocampus(海马区),a region of the brain that plays a key role in
learning and memory.
The findings suggest that even cortisol levels in the normal,"healthy"range can
actually accelerate brain aging.
The study results"now provide substantial evidence that long-term exposure to adrenal
(肾上腺的)stress hormones may promote hippocampal aging in normal elderly humans",
write Nada Porter and Philip Landfield.Cortisol is a hormone released in response to stress
by the adrenal glands(腺),which sit on top of the kidneys(肾).
Over a 5-to 6-year period,Dr. Sonia Lupien and his colleagues measured 24-hour
cortisol levels in 51 healthy volunteers,most of whom were in their 70s.
The researchers tested the volunteers' memory on six people in the increasing/high
category and five people in the decreasing/moderate group.The groups did not differ in
tests of immediate memory,but the increasing/high cortisol group had other memory
problems compared with those in the decreasing/moderate group.
The researchers also found that the total volume of the hippocampus in those in the
increasing/high group was 14% lower than those in the decreasing/moderate group,
although there were no differences in other brain regions.
The results suggest that“…brain aging can be accelerated by levels of adrenal
hormones that are not generally regarded as pathological(病态的)and that variation within
this normal range is related to variation in the rate of brain aging",write Porter and
Landfield."This further suggests that chronic stress may accelerate the worsening of the
hippocampus." It appears that when the hippocampus shrinks due to high levels of cortisol,other brain regions
A.may change dramatically.
B.may stop functioning.
C.may remain unaffected.
D.may be seriously damaged,
[单选题]铁路货车段修时,敞车侧柱边缘腐蚀深度大于板厚的( )时挖补、截换或更换
A.30%
B.40%
C.50%
D.60%
[多选题]EPC中的专有承载建立流程涉及哪些网元?()
A.MME
B.SGW
C.PGW
D.CG
[简答题]理解价值定价法是指什么?
[单项选择]对于大容量的清洗设备,工艺要求使用低泡、低温、长寿命的清洗剂,清洗液更换周期达()。
A. 15天
B. 1个月
C. 2个月
D. 3个月
[多选题]使用携带型火炉或喷灯时,不准在( )附件以及在电缆夹层、隧道、沟洞内对火炉或喷灯加油及点火。
A.带电导线
B.带电设备
C.变压器、油断路器(开关)
D.施工车辆
[单选题]在 OceanStor V3 存储系统中,关于远程复制一致性组,描述错误的是哪一项?()
A.所有成员必须一起同步、分裂、断开和主从切换。
B.用于保持多个 LUN 之间镜像数据的时间一致性。
C.一个一致性组中可以既有同步远程复制也有异步远程复制。
D.华为阵列的同一个一致性组里面的远程复制,主端必须来自相同的阵列,从端也必须来自相同阵列。
[单选题]规范的实施流程和文档管理,是信息安全风险评估结能否取得成果的重要基础,某单位在实施风险评估时,形成了《风险评估方案》并得到了管理决策层的认可,在风险评估实施的各个阶段中,该《风险评估方案》应是如下( )中的输出结果。
A.风险评估准备阶段
B.风险要素识别阶段
C.风险分析阶段
D.风险结果判定阶段
[多选题]爆破作业必须按公安机关要求组织安全警戒,在施工前( )天发布施工公告,在爆 破前( )天发布爆破公告,以布告的形式进行张贴。
A.1
B.2
C.3
D.4

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