热门试题:
[单选题]在制订环境中必需微量元素的卫生标准时,应考虑
A.适宜浓度范围
B.最高容许浓度值
C.平均浓度值
D.上限浓度值
E.下限浓度值
[单选题] 下列哪一项是对政府信息发布的时限要求?
A.准确性
B.公开性
C.全面性
D.及时性
[判断题]债券回购是指债券的卖方承诺在指定时间按照协议价格购汇这笔债券。( )
[不定项选择题]A.100:10
A.100:20
B.100:25~30
C.100:30~50
D.100:40~50
E.蛤粉炒时,药物与辅料的比例为( )。
[多项选择]LCP控制盘可以进行上下行线路的()和灯丝试验等操作。
A. 紧急停车;
B. 取消紧停;
C. 终止扣车;
D. 取消报警。
[单项选择]判断胎儿有无畸形,最常用的实验室检查是()
A. 甲胎蛋白测定
B. 血、尿雌三醇
C. 血清胎盘生乳素测定
D. 羊水中肌酐值
E. 胎儿头皮血气测定
[单项选择]Celebrate. Celebrate. Physicians are delighted with a Food and Drug Administration (FDA) advisory panel’s recommendation earlier this year that Vioxx and its cousins Bextra and Celebrex (all medicines known as Cox-2 inhibitors) should remain on the market, despite evidence they increase heart disease risk in some people. The panelists reached their decision after weighing all the data and concluding the benefits of these pain-relieving drugs outweighed the risks.
Specifically, these scientists acknowledged that, for some patients, these prescription drugs were uniquely effective in reducing pain from arthritis and other causes. For others—concerned about ulcers associated with aspirin and other OTC analgesics—the Cox-2 inhibitors offered the advantage of minimizing potentially serious effects of stomach irritation.
Now is an appropriate time for everyone to take a fresh look at the benefit-risk equation for Vioxx and the other Cox-2 inhibitors.
The risks-increased
A. no research had been done about their effects
B. some studies demonstrated their usefulness
C. their risks were not well known to the public
D. some patients complained about the decision
[单选题]属于企业文化核心层的是企业的( )。
A.行为文化
B.物质文化
C. 规范文化
D.精神文化
[单项选择]增生是()
A. 发育正常的器官、组织或细胞体积缩小
B. 器官长期不活动、功能减退引起的萎缩
C. 器官的实质细胞体积增大,同时数量增多
D. 细胞有丝分裂的结果
E. 创伤在痂下的愈合
[单选题]关于骨髓的说法错误的是
A.红骨髓有造血功能
B.黄骨髓无造血功能
C.黄骨髓可转化为红骨髓进行造血
D.成人红骨髓主要分布于长骨骨干
[单项选择]Transgenic mammals that secrete monoclonals in their milk can generate one gram of antibody for roughly $100—one third the price of traditional production methods, most scientists agree, but still too expensive to be -------.
A. revolutionary
B. efficient
C. cost-effective
D. regarded
E. (E) feasible
[单选题]下列《三国演义》的情节中,与诸葛亮无关的是:( )
A.隆中对策
B.赤壁之战
C.桃园三结义
[判断题]单人操作时若需进行登高或登杆操作,应做好相应的安全措施。
A.正确
B.错误
[单选题]跳闸是指断路器设备等自动从接通位置变为断开位置。
A. A.正确
B.B.错误
[多选题] 大风前后对避雷针的特殊巡视项目有(____)。
A. 无晃动
B. 无倾斜
C. 设备上无飘落积存杂物
D. 无锈蚀
[填空题]以下程序用来判断指定文件是否能正常打开,请填空。
#include <stdio.h>
main( )
FILE *fp;
if(((fp=fbpen("test.txt","r"))==______))
printf("未能打开文件!/n");
else
printf("文件打开成功!/n");
[单选题] 下列关于Ι型错误和Ⅱ型错误叙述不正确的是
A.Ⅰ型错误的概率用α表示
B.Ⅱ型错误的概率用β表示
C.样本量固定时,Ⅰ型错误的概率越大,Ⅱ型错误的概率也越大
D.样本量固定时,Ⅰ型错误的概率越大,Ⅱ型错误的概率越小
E.要同时减小Ⅰ型错误和Ⅱ型错误的概率,需增大样本量
[单项选择]日本血吸虫成虫主要寄生于人体哪一部位:()
A. 肝
B. 结肠壁
C. 肺
D. 肠系膜上静脉
E. 肠系膜下静脉
[多选题]列车调度指挥系统由( )三级构成。
A.总公司
B.铁路局
C.站段
D.车站
[单项选择]工程监理单位与承包单位串通,为承包单位谋取非法利益,给建设单位造成损失的,应当()。
A. 独自承担赔偿责任
B. 与承包单位承担连带赔偿责任
C. 不必承担赔偿责任
D. 由承包单位承担赔偿责任
[简答题]污染的食物中常见的病毒有哪些?食品中病毒有哪些来源?
[填空题]
Our ape-men forefathers had no obvious natural weapons in
the
struggle for survival in the strong claws of the big cats. They had
neither the
powerful teeth nor the strong claws, and could not rival with the
bear,
whose strength and speed provided an impressively "small-fire"
weaponry. 67.
______.
They could not even defend themselves by running swiftly like horses.
If the
ape-men attempted to compete on those terms in the open, they would
have 68. ______.
been
doomed to failure and extinction. But they were born with enormous concealing
69. ______.
advantages of a kind not possessed by any of
its competitors.
70. ______.
In the search for
the pickings of the forest, the ape-men were developed
71. ______.
efficient short-distance vision and a
sense of color that the animals of the
grasslands did not possess. The
ability to see dearly
[判断题]进行焊接或切割作业时,操作人员应穿戴专用工作服、绝缘鞋、防护手套等符合专业防护要求的劳动保护用品。()
A.正确
B.错误
[单选题]推进运行时联控间隙大于 时默认联控中断。
A.10秒
B.15秒
C.20秒
D.25秒
[判断题]在纸质商业汇票系统办理商业汇票解质押时,按先出库、后解质押的流程处理。
A.正确
B.错误
[单项选择]会计进行经济核算的经济业务是( )的经济业务事项。
A. 已发生且引起资金运动
B. 已发生且未引起资金运动
C. 将要发生未引起资金运动
D. 所有已发生
[判断题]顶杆及叉杆只能用于竖立10m以下的拔梢杆。
A.正确
B.错误
[简答题]1051、行车工作中司机等相关人员应直接向( )报告有关行车工作;在非集控站及转为车站控制的集控站,应向车站值班员报告。
[单项选择]对钩椎关节毗邻的描述,不正确的是()。
A. 前方为颈长肌
B. 后方为脊髓、脊膜支和椎体血管
C. 外侧有椎动脉、椎静脉和交感神经丛
D. 后外侧部构成椎间孔的后壁
E. 后外侧部邻近颈神经根
[单选题] 现行规范规定、GPS网观测时、必须观测气象元素的GPS网的等级是( )级。
A.A
B.B
C.C
D.D
[单选题] 防化手套主要用于( )的手部防护。(易)
A. 高电压场合
B. 有割伤场合
C. 化学灾害事故现场
D. 高温场合
[多选题]《铁路旅客运输办理细则》(铁运〔1997〕103号)规定,为测量儿童的身高,在()应涂有测量儿童身高的标准线。
A.售票窗口
B.检票口
C.出站口
D.列车端门口
[单选题]抑制剂的主要作用是( )。
A. 提高乙烯选择性
B. 提高乙烯转化率
C. 提高反应负荷
D. 降低反应温度
[单选题]钢丝绳插接的环绳或绳套,其插接长度应大于钢丝绳直径的()倍,且不得小于300mm。
A.5
B.10
C.15
D.20
[填空题]仰拱的施工缝、变形缝是地下水容易渗透的部位,应做好()
[单项选择]患者便后不洗手可引起自体感的寄生虫病是
A. 蛔虫病
B. 钩虫病
C. 鞭虫病
D. 蛲虫病
E. 旋毛虫病