【導(dǎo)讀】錯(cuò)選、多選或未選均無分。，已知Za=Zb=Zc=22Ω,線電壓ABU?請?jiān)诿啃☆}的空格中填上正確答案。，電阻R1上的電壓為___________V.,則正弦量的周期T=___________.，應(yīng)將電流表與該被測支路___________連接。U20=230V，加負(fù)載時(shí)輸出電壓U2=224V，則該變壓器的電壓調(diào)整率為___________.及其三個(gè)極的電流如示意圖所示，，靜態(tài)電流IC=2mA時(shí)，耦合電容C2上的直流壓降等于___________.，其基極電流IB應(yīng)大于_________.31．將圖示電路化簡為一個(gè)等效電流源電路。32．圖示為正弦電路，試定性地作出電流I?,寫出電流的瞬時(shí)值表達(dá)式。33．圖示為電動(dòng)機(jī)起—?？刂齐娐?。指出此電路的接線錯(cuò)誤；分析由此產(chǎn)生的后。果；畫出正確接線圖。，求輸出電壓uo1及uo2.，使輸出端F=0時(shí)，各輸入端ABCDE的狀態(tài)應(yīng)如何？37．試用戴維南定理計(jì)算圖示電路中3Ω電阻中的電流I.100盞40W的日光燈接于50Hz、220V正弦電源上。日光燈的等效電路可視為由R. 與L串聯(lián)構(gòu)成，如圖示。若正常工作時(shí)其功率因數(shù)cos?及電路的有功功率P、無功功率Q和視在功率S.

　　

【正文】 uan of special funds input, 浙 02187 電工與電子技術(shù)試卷 第 23頁（共 108頁） stake setting. According to statistics, last year the city has erected building control zone peg 820, construction control area boundary markers 815 . the second is highway greening and beautification work enhance the road area remediation effectiveness. Will highway greening and beautification work as road area remediation of a key, invite garden experts to guide the design of green, the implementation of high standards for ecological landscape highway activities to create, five years, I board greening mileage of more than 900 kilometers, appropriate road greening greening rate of 100%, effectively enhance the city road greening level and grade, adds a sharp scenery line for **********. Third, rectification of illegal construction and occupation of the road has been checked. By through the town, crossing the road on many occasions to carry out concentrated rectification actions, to clear the remnants of the wall, broken Archives of highways in strict accordance with the wall of building structures and the illegal deposits, remediation along the Jeeves, Jeeves placed advertisements and vehicle maintenance, car washing and other acts, standardize and purification on both sides of the highway billboards and other non road signs, I city of national and provincial highway basic elimination of the dirty, chaotic, poor, blocking 浙 02187 電工與電子技術(shù)試卷 第 24頁（共 108頁） phenomenon, highway traffic environment purification, landscaping. (2) to strengthen the management on the basic data management. The level of the archives management regulations, formulate the file management system , the establishment of the road, the implementation of the file manager, file collection, filing, sorting, filing, confidentiality, custody, borrow, identification pin Destroy the standardization. 2, standardized management, enhance service image (a) evaluation system to further improve in order to strengthen and standardize guidance and assessment of each county (area) bureau of highways management work, the Bureau developed a *** City Highway Bureau highways management assessment implementation measures (Trial). To regularly check for half a year, yearend assessment and irregular random sampling bined, taking the spot road inspections, sampling sections, listening to the reports, archives data check, for each county (area) bureau of highways management work implementation of the special assessment. According to the annual prehensive assessment appraisal score results, evaluation of outstanding, excellent pliance and Not up to the standard of four grades. And in accordance with the level of assessment, the award on behalf of dial highway management funds. Total score is above 浙 02187 電工與電子技術(shù)試卷 第 25頁（共 108頁） 95%, is excellent, 10 million yuan reward。 total score of 90 94 for excellent, 8 million yuan reward。 for the total score of 80 89 points for standard, reward 50000 yuan. On the total score is less than 79 points for nonpliance unit, circulate a notice of criticism. (II) Sheung inspection work to further standardize a is in place to ensure the inspection. National and provincial trunk highway patrol monthly not less than 20 days, State Road a week of not less than 3 times, dart a week of not less than 2 times. The second is to explore and promote the electronic patrol monitoring. City highway patrol vehicles are installed on the highway patrol vehicle monitoring system。 highway law enforcement personnel are equipped with a recorder for law enforcement, on the process of supervision and law enforcement to ensure evidence has played an effective role. The third is unified and standardized inspection ledger records, inspection equipment use and management of the electronic Patrol information storage utilization. The fourth is the establishment of highway maintenance and inspections mechanism. The city39。s 19 country and provincial trunk highway maintenance center equipped with the CPPCC keeper, and to develop a road of the Chinese people39。s Political Consultative Conference tube member 浙 02187 電工與電子技術(shù)試卷 第 26頁（共 108頁） responsibilities. According to statistics, in 2020 (on the road. Day.... Stop the road mileage, 17 cases。 clean up debris on both sides of the road 20 , demolition billboard 30, demolition chaotic scaffolding house 3, clean Lane Hawking 15.) (3) road permit work to further strengthen the implementation of administrative licensing system, strengthen the supervision and administration of the licensing. Strict implementation of the Guangdong Province highways license implementation measures . According to the provisions of the road approval procedures and processes to carry out road license, do according to the law, the license in accordance with the law, shall be subject to examination and approval of the. Implement the collective examination and approval, to strengthen supervision. Highways and approval of business implementation of technical review of administrative approval and separation, the audit focused on the more plex involved in the road licensing matters, collective decisionmaking, to improve the scientific nature of the road administrative examination and approval, reduce approval corruption risks. Second is to promote the In administrative permission of information technology to improve service quality. According to the *** Provincial People39。s Government Office on Issuing 2020 improve 浙 02187 電工與電子技術(shù)試卷 第 27頁（共 108頁） and expand the spirit of the relevant documents of the online business hall of program of work notice and ministries and provincial and municipal government, I realized the butt of Guangdong Province highway information work and provincial work business hall * * * branch office highways licensing examination