[填空题]
Television is one of the most commonly seen entertainment
device in people’s daily life. Probably people will never think about it.
However, TV—the most{{U}} (47) {{/U}}and persuasive of modem
technologies, marked by rapid change and growth—is moving into a new era, an era
of{{U}} (48) {{/U}}sophistication and versatility, which{{U}} (49)
{{/U}}to reshape our lives and our world. It is an electronic {{U}}(50)
{{/U}}of sorts, made possible by the marriage of television and computer
technologies.
The word "television",{{U}} (51)
{{/U}}from its Greek (tele: distant) and Latin (visio: sight) roots, can{{U}}
(52) {{/U}}be interpreted as sight from a distance. Very simply put,
it works in this way: through a sophisticated system of electronics, television
provides the capability of{{U}} (53) {{/U}}an image into electronic
impulses, which can be sent{{U}} (54) {{/U}}a wire or cable. These
impulses, when fed into a receiver (a telev
[单项选择]国际收支不平衡是指()不平衡。
A. 自主性交易
B. 调节性交易
C. 经常账户交易
D. 资本金融帐户交易
[单选题]防灾安全监控系统规定 10 级( )。
A.限速 300 km/h
B.限速 200 km/h
C.限速 120 km/h
D.禁止列车进入风区
[单项选择]患者,男,18岁,单膝扭伤,一周后就诊,发现胫骨内髁有压痛感,诊断内侧副韧带损伤,经休息理疗局部封闭治疗一个月后不见好转,且疼痛加剧,夜间尤甚,再次就诊应首选()
A. 碱性磷酸酶
B. 白细胞
C. 摄片
D. 查血沉、白细胞
E. 查抗"O"类风因子
[单项选择]处理土地权属问题时具有法律效力的图件应是( )。
A. 地籍图
B. 房产图
C. 宗地草图
D. 宗地图
[单选题]()流程需总部物资部审批
A.新增特征值
B.新增物资小类
C.新增物料主数据
D.新增物料编码
[单项选择]一般情况下,畅流时垂线()流速最大,河底流速为零,总体垂线流速分布呈一定形状的曲线。
A. 水面
B. 平均水深处
C. 相对水深0.2
D. 相对水深0.8
[单选题]某变电站油浸式变压器大修后,气体保护出口切换片放于试验位置,突然变压器内部发生相间短路,瓦斯保护动作时结果为( )。
A.只将高压侧断路器切除
B.只将低压侧断路器切除
C.断开变压器各侧断路器
D.发重瓦斯信号,不跳闸
[判断题]易自然、自然煤层的井下采空区低浓度瓦斯抽采时,应在靠近可能的火源点一侧的管道上安设抑爆装置。( )
A.正确
B.错误
[填空题] You probably have noticed that people express similar ideas in different ways, depending on the situation they are in. This is very (36)________. All languages have two general levels of (37)________: a formal level and an informal level. English is no (38)________. The difference in these two levels is the situation in which you use a (39)________level. Formal language is the kind of language you find in textbooks, (40)________books, and in business
letters. You would also use formal English in compositions and (41)________that you write in school. Informal language is used in conversation with (42)________, family members and friends, and when we write (43)________notes or letters to close friends.
Formal language is different from informal language in several ways. First, formal language tends to be more polite. (44) ________________. For example, I might say to a friend or family member, "Close the door, please, "(45) ________________.
Another difference between form
[单选题]在RLC串联正弦交流电路中,当外加交流电源的频率为f时发生谐振,当外加交流电源的频率为2f时,电路的性质为( )。
A.电容性电路
B.电感性电路
C.电阻性电路
D.纯容性电路
[多选题]检修工作结束以前,若需将设备试加工作电压,应按下列( )条件进行。
A.A-全体作业人员撤离工作地点
B.B-将该系统的所有工作票全部终结
C.C-拆除临时遮栏、接地线和标示牌,恢复常设遮栏
D.D-应在工作负责人和运维人员进行全面检查无误后,由运维人员进行加压试验
[单选题]额定电压为220kV的绝缘支、拉、吊杆的最短有效绝缘长度为( )m
A.0.6
B.0.7
C.1
D.1.8
[单选题]同一直流系统两端换流站间发生系统通信故障时,两换流站间的操作应根据()的指令配合执行。
A.工作负责人
B.值班调控人员
C.主管领导
D.专责监护人
[多项选择]城市道路按国标应分为下述的哪些类( )
A. 高速路
B. 快速路
C. 主干路
D. 支路
E. 次于路
[多选题]OCC 是地铁运营日常管理、设备维修、行车组织的指挥中心,设有( ),对全线列车运营和设备运行情况进行监视、控制、协调、指挥和调度。
A.主任调度
B.行调
C.电调
D.环调
E.维调
[判断题]单线站间联系电路,当接车站的接近预告轨道继电器JYGJ吸起时,反映进站信号机的接近区段空闲。( )
A.正确
B.错误
[单项选择]四支股票出现了不同的换手情况,最应该买入的是()。
A. 连续多日平均换手率在7%-8%的 水平上
B. 突然有一日换手高达20%,随后几天交投清淡
C. 连续两周换手频繁,行情发动以来已经上涨将近30%
D. 十个交易日均保持较高换手,换手率不断 有所增加
[填空题]SS4改型电力机车低压试验时,闭合主断路器,“主断”灯灭,“( )”灯灭后又亮。
[单项选择]输尿管结石的主要症状为
A. 无痛性全血尿
B. 肾绞痛加镜下血尿
C. 尿痛、尿频
D. 排尿困难
E. 尿失禁
[多项选择]造假分子一般采用以下哪几种方式伪造人民币的光变面额数字。( )
A. 用彩色笔直接涂上
B. 用无色荧光油墨印刷
C. 使用珠光油墨丝网印刷
D. 用普通单色油墨平版印刷
[多选题]有关广播域和冲突域的概论,下面说法正确的是( )
A.一个交换机的端口是一个冲突域
B.一个Hub的所有端口都是一个冲突域
C.交换机中,同属于一个VLAN的端口是一个广播域
D.以上都不对
[单选题]任何单位、个人都应当( )为报警提供便利,不得阻拦报警。
A.有偿
B.无偿
C.视情