[多选题]某市减速机集团有限公司，10KV高供低计，变压器容量为500KVA，主表倍率为160，办公照明为定比3%，该 户属于市场化零售客户，月末抄表。当月返回大工业电价结算价差为（-0.0154元/千瓦时），返回一般工商业 及其他电价结算价差为（-0.0121元/千瓦时）。2019年10月抄表示数如下：有功总抄见电量66424kwh,正向无功 抄见电量3347kvarh,反向无功抄见电量1784kvarh,变压器有功铁损490无功铁损3528 K值3.75,试计算该户功率因数
A.0.99
B.0.95
C.-0.75%
D.-1.15%

[单选题]使用电气工具时，禁止提着电气工具的导线或转动部分。
A.　A.正确 　
B.B.错误

[单选题]7．低钾血症时补钾，下列错误的是
A.．5%葡萄糖液500ml，加入钾盐不得超过1.5g
B.．尿量每小时＞40ml方可补钾
C.．静脉滴注的速度为20～40mmol/h
D.．每天补钾量在60～80mmol
E.．每天补钾量不能超过5g

[单选题]未接任何负载的电压互感器低压侧一相电压为零，两相不变，线电压两个降低，一个不变，说明( )。
A.低压侧两相熔断器断
B.低压侧一相铅丝断
C.高压侧一相铅丝断
D.高压侧两相铅丝断

[简答题]可采取哪些措施加以防止

[多选题]下列动力作用（荷载）属于简谐激励的有：（ ）
A.地震作用
B..旋转机械设备振动
C..风振及环境振动
D..电风扇引起的振动

[多选题]广播电视站无限发射台（站）、转播台（站）、差转台（站）、监测台（站）统一执行国家规定的（ ）标准，不执行（ ）政策。
A.峰谷电价
B.商业电价
C.非普工业类电价
D.峰谷分时电价

[单选题]DK-l型电空制动机电空位操纵,空气制动阀手柄在运转位、电空制动控制器手柄置重联位时,( )失电,切断了均衡风缸充风通路。
A.中立电空阀
B.制动电空阀
C.缓解电空阀
D.以上都不是

[单项选择]在PMS系统中，输电架空线路检测记录工作类型为电杆裂纹检测时，可对哪类杆塔进行检测（）
A. 水泥杆
B. 铁塔
C. 钢管杆
D. 以上都对

[多项选择]境外直接上市的优点有（）
A. 一旦首次公开发行获得成功，公司股票达到足够高的价格、公司获得较好的声誉
B. 境外直接上市影响大，为世界了解国内企业和中国经济开辟新的渠道
C. 各国关于设立、股票发行和上市交易的法律差异不大
D. 境外直接上市审批手续简单E、用于编制信息披露财务报表的会计准则无异

[多选题]预案制定的范围包括()
A.人员密集场所
B.危险化学品单位
C.高层公共建筑
D.重要机关和单位

[判断题]变压器室、配电室、电容器室的门应能双向开启,相邻配电室之间有门时,此门应向一侧开启。
A.正确
B.错误

[单选题]现场检查计量柜等带电设备时，应正确穿戴齐全且合格的劳动防护用品，检查高压带电设备时，可以打开闭锁装置。
A.正确
B.错误
C.略
D.略
E.略
F.略

[填空题]The essential problem of man in a computerized age remains the same as it has always been. That problem is not {{U}} (36) {{/U}} how to be more productive, more comfortable, more content, but how to be more sensitive and more sensible, and more {{U}} (37) {{/U}}. The computer makes possible a phenomenal leap in human {{U}} (38) {{/U}}; it demolishes the fences around the practical and even the {{U}} (39) {{/U}} intelligence. But the question {{U}} (40) {{/U}} and indeed grows whether the computer will make it easier or harder for human beings to know who they really are, to identify their real problems, to respond more fully to beauty, to place adequate value on life, and to make their world safer than it now is. Electronic brains can reduce the profusion of dead ends involved in vital research. But they can’t {{U}} (41) {{/U}} the foolishness and decay that come from the unexamined life. Nor do they connect a man to the things he has to be connected to -- tile reality of pai

[不定项选择题]在体内可转变生成胆汁酸的原料是（　　）。
A.胆汁
B.胆固醇
C.胆绿素
D.血红素

[简答题]简述动车组ATP/LKJ隔离后的限速功能。

[简答题]

Ragtime is a musical form that synthesizes folk melodies and musical techniques into a brief quadrille-like structure, designed to be played—exactly as written—on the piano. (46) A strong analogy exists between European composers like Ralph Vaughan Williams and Edward Grieg, who combined folk tunes and their own original materials in larger compositions and the pioneer composers in the United States. Composers like Scott Joplin and James Scott were in a sense collectors or musicologists, collecting dance and folk music in Black communities and consciously shaping it into brief suites or anthologies called piano rags.
It has sometimes been charged that ragtime is mechanical. For instance, Wilfred Mellers comments, "rags were transferred to the pianola roll and, even if not played by a machine, should be played like a machine, with meticulous precision." (47)However, there is no reason to assume that ragtime is inherently mechanical simply be