【導讀】預計2020年本章考試分值在15分左右。關鍵工作和關鍵線路（12題）；實施性施工進度計劃的作用（4題）；建設工程項目進度控制的任務（4題）；單代號網絡計劃（3題）；場景（一）某施工企業(yè)與業(yè)主簽訂了某工程的施工承包合同。經監(jiān)理工程師審核批準的施工進度計劃如。在雙代號網絡圖中，為了正確地表達圖中工作之間的邏輯關系，往往需要用虛箭線。是實際工作中并不存在的一項虛設工作，故它們既不占用時間，也不消耗資源。時間、最遲完成時間、總時差和自由時差。由圖可知計劃工期是300天。要求工期，任務委托人所要求的工期，用Tr表示；期時，可令計劃工期等于計算工期，Tp＝Tc。，外裝修作業(yè)的最早開始時間和最遲開始時間分別是（）。，電梯安裝及調試工作的總時差為（）天。，工作的最早開始時間應為其所有緊前工作（）。根據(jù)網絡計劃的繪制規(guī)則，網絡計劃中不允許存在循環(huán)回路。根據(jù)上述分析，只有選項B的說法正確。

　　

【正文】 al office of the Central Committee of the Party issued a notice to solicit the provinces (autonomous regions, municipalities) Party, the central ministries and missions, state ministries and missions of the Party (party), the General Political Department of the military, every 3 people anization of Party of two regulations revision opinion. Central Commission for Discipline Inspection of extensive solicitation of opinions, careful study, attracting, formed a revised sent reviewers. In October 8 and October 12, Central Committee Political Bureau Standing Committee and the Political Bureau of the Central Committee After consideration of the two regulations revised draft. On October 18, the Central Committee of the Communist Party of China formally issued two regulations. Can say, two laws amendment concentrated the wisdom of the whole party, embodies the party. Second, code and Regulations revision of the basic principles of two party regulations revision work and implement the party39。s eighteen, ten eight plenary, the spirit of the Fourth Plenary Session of the Eleventh Central Committee and General Secretary Xi Jinping important instructions on the revised low political criterion and Regulations , highlighting the ruling party characteristics, serious discipline, the discipline quite in front of the law, based on the current, a longterm, advance as a whole, with Bu Xiuding independent rule and rule . Main principle is: first, adhere to the party constitution to follow. The constitution about discipline and selfdiscipline required specific, awaken the party constitution of party passes party consciousness, maintaining the authority of the constitution. General Secretary Xi Jinping pointed out that no rules, no side round. Party constitution is the fundamental law, the party must follow the general rules. In early 2020 held the eighth session of the Central Commission for Discipline Inspection Fifth Plenary Session of the 16th Central Committee, Xi Jinping again pointed out that constitution is the party must follow the general rules, but also the general rules. the revision of the code and rule is Method in adhere to the regulations established for the purpose of bining rule of virtue is to adhere to the party constitution as a fundamental to follow, the constitution authority set up, wake up the party constitution and party rules the sense of discipline, the party constitution about discipline and selfdiscipline specific requirements. 4 second is to adhere to in accordance with the regulations governing the party and the party. The Party of rule of virtue de, mainly refers to the party39。s ideals and beliefs, excellent traditional style. The revised the code closely linked to the selfdiscipline, insisting on the positive initiative, for all members, highlight the vital few, emphasized selfdiscipline, focusing on the morality, and the majority of Party members and the ideological and moral standards. The revised Ji method separately, Ji, Ji Yan to Method, as a negative list, emphasizing the heteronomy, focusing on vertical gauge. Is this one high and one low, a positive reaction, the strict party discipline and practice results transformation for the integration of the whole party to observe moral and discipline requirements, for the majority of Party members and cadres provides benchmarking and ruler. Third, insist on to. In view of the problems existing in the party at the present stage, the main problems of Party members and cadres in the aspect of selfdiscipline and abide by the discipline to make clearly defined, especially the party39。s eighteen years strict political discipline and political rules, anization and discipline and to implement the central eight provisions of the spirit against the four winds and other requirements into Disciplinary provisions. Not one pace reachs the designated position, focusing on in line with reality, pragmatic and effective. After the revision of major changes, major changes in the code and rule modified and needs to grasp several key problems (a) code code adhere to according to regulations governing the party and party with morals in bination, for at the present stage, the leadership of the party members and cadres and Party members in existing main problems of selfdiscipline, put forward principles, requirements and specifications, showing Communists noble moral pursuit, reflected at all times and in all over the world ethics from high from low 5 mon requirements. One is closely linked to the selfdiscipline, removal and no direct relation to the provisions of . the second is adhere to a positive advocate, eight prohibition 52 are not allowed to about the content of the negative list moved into synchronization amendment cases . Three is for all the party members, will apply object from the leadership of the party members and cadres to expand to all Party members, fully embodies the prehensive strictly required. The fourth is prominent key minority, seize the leadership of the party members and cadres is the key, and put forward higher requirements than the ordinary Party members. Five is to simplify, and strive to achieve concise, easy to understand, easy to remember. The revised code is the ruling Party since the first insists on a positive advocate forAll Party members and the selfdiscipline norms, moral declaration issued to all members of the party and the National People39。s solemn mitment. criterion of a clean and honest administration consists of 4 parts, 18, more than 3600 words. After the revision of the code , a total of eight, 281 words, including lead, specification and Party member cadre clean fingered selfdiscipline norms, etc. Part 3 members lowcost clean and selfdiscipline, the main