| It is a curious paradox that we think of the
physical sciences as "hard", the social sciences as "soft", and the biological
sciences as somewhere in between. This is interpreted to mean that our knowledge
of physical systems is more certain than our knowledge of biological systems,
and these in mm are more certain than our knowledge of social systems. In terms
of our capacity to sample the relevant universes, however, and the probability
that our images of these universes are at least approximately correct, one
suspects that a reverse order is more reasonable. We are able to sample earth’s
social systems with some degree of confidence that we have a reasonable sample
of the total universe being investigated. Our knowledge of social systems,
therefore, while it is in many ways extremely inaccurate, is not likely to be
seriousl A. theories of its origin and history are varied B. our knowledge of it is highly insecure C. only a very small sample of it has been observed D. few scientists are involved in the study of astronomy [判断题]架空线路的纵断面图反映沿线路中心线地形的起伏形状及被交叉跨物的标高。
A.正确 B.错误 [单选题]现行《铁路桥隧建筑物修理规则》共有（）章.十个附录.27个附表。
A.六 B.七 C.八 D.九 [单项选择]
●TCP 是互联网中的（）协议，使用（）次握手协议建立连接。这种建立连接的方法可以防止（）。TCP 使用的流量控制协议是（）。 TCP 使用的流量控制协议是（）A. 固定大小的滑动窗口协议 B. 可变大小的滑动窗口协议 C. 后退N 帧ARQ 协议 D. 选择重发ARQ 协议 [多选题]措施项目费的计算方法一般有（ ）。
A.工料单价法 B.综合单价法 C.参数法计价 D.专家评估法 E.分包法计价 [单选题]格拉段各车间落实好无缝线断轨检测设备报警时的检查工作，（ ）臆测放行列车，检查工作必须落实到实处。
A.可以 B.严禁 C.无所谓 [单选题]圬工梁拱裂纹的检查方法主要有画线法、显微镜测量法、酚酞溶液注射法、( )、测标法、杠杆式引伸法等。
A.钻孔法 B.压气法 C.注水法 D.敲击法 [单选题]外挂门的解锁通过（ ）的旋转来实现。
A.电机定子 B.电机转子 C.丝杆 D.轴承 [多项选择]终止循环代扣方式分为（）。
A. 全额扣款成功结束 B. 连续扣款N年结束 C. 指定日期连续扣款N月结束 D. 连续扣款N日结束 [多选题]影响ETC车辆通行故障( )
A.栏杆机故障 B.天线故障 C.车牌识别系统故障 D.车检器故障 [单选题]施工特定引导接车并正线通过时,准许列车司机凭( )的显示,以不超过60 km/h速度进站。(应知应会-《技规》第381条)
A.引导手信号 B.引导信号 C.特定引导手信号 D.特定信号 [判断题]二级/基层单位（业务单元）对区域范围内的职业病危害因素防护负责。
[单项选择]在一场象棋循环赛中，每位棋手必须和其他棋手对弈一局，且同一对棋手只弈一次。这次比赛共弈了36局棋，问棋手共有几位（）
A. 6 B. 7 C. 8 D. 9 [填空题]顾客满意度是反映顾客满意度的（）。
[判断题]( )双闸板闸阀不适于垂直安装使用。
A.正确 B.错误 我来回答: 提交
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