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[单选题]在其他扫描参数不变的情况下,改变哪一个选项,可使扫描时间缩短一半
A.增加层厚一倍
B.扫描野扩大一倍
C.射频激励次数减少一半
D.射频接收带宽减少一半
E.层面系数缩小一半

热门试题:

[判断题]CRH1型动车组边门的驱动方式为风动。()
A.正确
B.错误
[单选题]剧毒物泄漏扩散时车辆及人员集结点应选择在( ) 。
A.侧风方向
B.上风方向
C.下风方向
D.侧下风防向
[单选题]人体每日需求的热量有( )由碳水化合物提供。
A.A.65%~75%
B.B.35%~45%
C.C.25%~35%
D.D.59%~65%
[多选题]专业分包商需将施工作业票( )报施工项目部备案,经施工项目部培训考核合格后方可开票。
A.A-项目经理
B.B-签发人
C.C-工作负责人
D.D-安全监护人
[单选题]ICMP 协议的作用是( )。
A.报告 IP 数据报传送中的差错
B.进行邮件收发
C.自动分配 IP 地址
D.进行距离矢量路由计算
[简答题]零库存的含义?及其实现方式?
[判断题]建海公司因不能清偿到期债务被债权人申请破产,此前建海公司欠金星公司10万元的劳务费一直没有支付。金星公司知道建海公司被申请破产后,遂向建海公司购买10万元货物,但迟迟不支付货款。人民法院受理建海公司的破产申请后,金星公司可以主张以此lo万元货款抵销建海公司欠付的lo万元的劳务费。 ( )
[单选题]无列检作业的列车,负责将列尾装置主机与列车尾部制动软管连结的人员是( )。
A.车务人员
B.机车乘务员
C.列检人员
D.车辆乘务员
[单项选择]米非司酮属于()
A. 雌性激素
B. 抗雌性激素
C. 孕激素
D. 抗孕激素
E. 糖皮质激素
[单选题]有毒有害类安全防护方法不正确的是( )。(中)4
A.扑救危险化学品火灾时,必须在上风方向建立灭火阵地
B.消防人员刚到火场时,不能冒然实施战斗展开
C.严格控制进入有毒有害区域的人数
D.火场发现有强酸时禁止使用直流水直接冲击
[单选题]B-A-A-001 3 2 1
光纤通信是以光波作为传输信息的( )的一种通信。
A.载波
B.载体
C.介质
D.媒质
[判断题] 特种作业人员每次作业前应对特种设备进行使用前检查并记录在《特种设备作业记录表》。()
A.正确
B.错误
[单项选择]Everybody loves a fat pay rise. Yet pleasure at your own can vanish if you learn that a colleague has been given a bigger one. Indeed, if he has a reputation for slacking, you might even be outraged. Such behaviour is regarded as "all too human", with the underlying assumption that other animals would not be capable of this finely developed sense of grievance. But a study by Sarah Brosnan and Frans de Waal of Emory University in Atlanta, Georgia, which has just been published in Nature, suggests that it is all too monkey, as well.
The researchers studied the behaviour of female brown capuchin(卷尾猴) monkeys. They look cute. They are good natured, cooperative creatures, and they share their food readily. Above all, like their female human counterparts, they tend to pay much closer attention to the value of "goods and services" than males.
Such characteristics make them perfect candidates for Dr. Brosnan’s and Dr. de Waal’s study. The researchers spent two years teaching thei
A. monkeys are also outraged by slack rivals
B. resenting unfairness is also monkeys nature
C. monkeys, like humans, tend to be jealous of each other
D. no animals other than monkeys can develop such emotions
[单项选择]

Research on animal intelligence always makes me wonder just how smart humans are. (21) the fruit-fly experiments described in Carl Zimmer’s piece in the Science Times on Tuesday. Fruit-flies who were taught to be smarter than the average fruit-flies (22) to live shorter lives. This suggests that (23) bulbs burn longer, that there is a(n) (24) in not being too terrifically bright. Intelligence, it (25) , is a high-priced option. It takes more upkeep, burns more fuel and is slow (26) the starting line because it depends on learning process—a (27) learning—instead of instinct. Plenty of other species are able to learn, and one of the things they’ve apparently learned is when to (28) Is there an adaptive value to (29) intelligence That’s the question behind this new research. I like it. Instead of casting a wistful glance (30) at all the species we’ve left in t
A. tendency
B. advantage
C. inclination
D. priority

[单项选择]优秀运动员与一般运动员技术上的主要差距在于蹬地角()
A. 更大
B. 更小
C. 更适宜
D. 不变
[简答题]使用人力制动机制动应如何挑选闸位?
[单选题]依据《中国南方电网有限责任公司电力安全工作规程》(Q/CSG510001-2015)第7.3.1规定:在停电的电气设备上接地(装设接地线或合接地刀闸)前,应先验电,验明电气设备确( )。
A.无损坏
B.无电压
C.无绝缘
D.带电
[判断题]一般气体钢瓶,一年检验一次。
A.正确
B.错误
[单项选择]在BSP方法研究步骤中,下列哪一步是研究数据逻辑相关性的归类工作
A. 企业过程定义
B. 开发计划制定
C. 信息总体结构定义
D. 数据类定义。
[单项选择]黑海和红海分别属于哪两大洋()
A. 太平洋和大西洋
B. 大西洋和印度洋
C. 北冰洋和大西洋
[填空题]根据我国《企业财务制度》的规定,年度会计报表应于年度终了后的 个月内报出。
[单项选择]对公用电信网与专用电信网之间的网间互联,国务院信息产业主管部门在 中对双方的义务、联网原则、有关费用、联网程序、专用网与其他电信业务经营者的电信网联网原则,联网后的网络管理等内容做出了规定。
A. 《专用电信网与公用电信网联网管理规定》
B. 《电信条例》
C. 《互联网信息服务管理办法》
D. 《网间互联管理规定》
[填空题]

用户登录部分功能调用由位于发布目录c:/website下的login.asp文件实现,数据库连接由conn.Asp文件实现。其中,数据库文件名为account.Mdb,用户表为actuser,用户名字段和用户密码字段分别为act_username和act_password。Login.asp代码如下所示,请将空缺的部分补充完整,并填写在答题纸的相应位置。
<!--#include file=”conn.asp”—>
<%
sql=”select * from actuser where act username=’”&username&”’”
rs.open sql,conn, 1,1
if (1) then
response .write “<script>alert(‘登录失败’) ;history.back( ) ;</script>”
response, end
else
if rs (“act_password”) <>password then
response .write “<script>alert (‘登录失败’); history, back( ); </script>”
(2)
end if
ses sion ( “admin” ) =username
response, write”<script>alert (‘登陆成功’); location.href=’index, asp’
</script>”
(3)
%>

文中(2)应为()。
[简答题]绑扎直立构件(如墙、水塔壁、烟囱筒、池壁等)的钢筋应注意哪些问题
[单项选择]董希文的()表现一个重大的题材,体现了作者高度的艺术概括能力,作品具有鲜明的民族特色和民族气魄。
A. 《开国大典》
B. 《齐白石像》
C. 《狼牙山五壮士》
D. 《占领总统府》
[判断题]( )按电话闭塞法行车时,接车站行车值班员确认站内接车线路空闲,办理好接车进路后,即可向发车站给出电话记录号码,同意接车。
A.正确
B.错误
[单选题]动物卫生监督机构在监督检查过程中,发现甲某涂改了检疫证明的数量和日期,动物卫生监督机构对其进行了行政处罚。被涂改的检疫证明在证据的分类上属于( )。
A.书证
B.物证
C.视听资料
D.当事人陈诉
[多选题] 发展社会主义民主政治就是要( ),用制度体系保证人民当家做主。
A..体现人民意志
B..保障人民权益
C..保护人民财产
D..激发人民创造活力
[单项选择]

Mr. Brown was going away for a week. Before he left, he said to his son, "If anyone asks for me, you can tell him that your father has been out for doing something, and will be back in a week, then be sure to ask him to sit down for a cup of tea. "
"OK, Dad," said his son. But he was afraid his son couldn’t remember this, so he wrote these words down on a piece of paper and gave it to him. His son put it into his small pocket, took it out. and looked at it every now and then.
Four days passed, ’but no one came to see his father. The boy thought that there was no man to come and that the piece of paper was of no more use for him, so he burnt it that evening.
The next afternoon, someone knocked at the door. The boy opened it. A man was standing at the door and said, "Where is your father" The boy put his hand into his pocket at once and looked for the piece of paper. He could not find it. He suddenly remembered he ha
A. the second day
B. the third day
C. the fourth day
D. the fifth day

[判断题]作业人员在梯顶作业,梯子应有人扶持和监护。
A.正确
B.错误
[单项选择]与INTERNET相连的任何一台计算机,不管是最大型的还是最小型的,都被称为INTERNET()
A. 服务器
B. 工作站
C. 客户机
D. 主机
[简答题]病程可分为哪四个阶段?
[单选题]下列各种情况下,不可能造成机泵震动大的是( )。
A.泵轴与电动机轴不同心
B.泵的流量较大
C.泵轴弯曲
D.地脚螺栓松动
[判断题]根据《海牙公约》的规定,某人在飞行中的航空器内使用暴力的方式非法劫持或控制航空器,各缔约国可根据各自国家国情,对该人处以轻罚或重罚。
A.正确
B.错误
[单选题]通里穴主治病证有
A.呕吐
B.失眠
C.健忘
D.暴喑
[单项选择]下列关于栈的描述中,正确的是( )。
A. 在栈中只能插入元素而不能删除元素
B. 在栈中只能删除元素而不能插入元素
C. 栈是特殊的线性表,只能在一端插入或删除元素
D. 栈是特殊的线性表,只能在一端插入元素,而在另一端删除元素
[单选题]路测数据上显示的邻小区信息是
A.路测设备可以搜索到的所有邻小区信息
B.是网管后台配置的邻小区信息
C.是导入的基站信息表中的邻小区信息
D.以上都不是

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