入党积极分子的考察期、预备党员的预备期分别是多少？
按照施工合同示范文本的规定，由于（）等原因造成的工期延误，经工程师确认后工期可以顺延。 A.发包人未按约定提供施工场地 。 B.分包人对承包人的施工干扰 。 C.设计变更 。 D.承包人的主要施工机械出现故障 。 E.发生不可抗力。
You are the administrator of a Windows 2000 network. You need to store secured files for ExamSheet's engineering and research departments on a Windows 2000 Professional computer.Members of the engineering department often participate in projects with the research department. To meet the file storage needs of both departments, the following requirements must be met: 1.Users in the engineering department must have the ability to update the research department's documents. 2.Users in the research department should not have the ability to view the engineering department's documents. 3.Users in both departments should have the ability to update their own documents. 4.Users in the development department must have the ability to view both the engineering and the research department's files. You create two shared folders named Engineering and Research and remove the inherited NTFS permissions on each shared folder. You create three groups named Engineering, Research and Development, and add the appropriate user accounts into the appropriate groups. You want to grant permissions that meet all of these requirements. You want to ensure that you do not grant more permissions than necessary. What should you do? To answer, select the appropriate permission setting for each group and drag the setting under each folder.
柴油发动机动力性下降的原因有（）。 喷油器喷油压力过高。 机油压力过低。 气缸压力下降。 柴油滤清器堵塞。 喷油器打不开导致不喷油。
刘某，女，28岁，以“孕36周＋2先兆子痫”为主诉于2006年5月28日急诊入某妇幼保健院，入院后医生行急诊剖腹手术，因术中出血较多病情危重，医生给患者输血400毫升，该400毫升全血系中心血站提供，有全套血液七项检验合格的结果。刘某母子平安顺利出院，出院后一个月刘某感到乏力、厌油腻，到市人民医院就医，经化验被确诊为“急性丙型肝炎”，住院治疗三个月。刘某认为自己患上急性丙型肝炎为接受剖宫产时医院输血所致，因而将某妇幼保健院和中心血站一并作为被告，向人民法院提起诉讼，要求两被告赔偿自己因输血而患丙型肝炎所导致的损失。诉讼过程中，妇幼保健院提供了记载详尽的从中心血站进血的记录资料，中心血站也提出了所供应血液的全套七项检验合格的结果记录。经查，妇幼保健院和中心血站所提供的证据真实合法有效，能够证明上述二被告在本次输血中不存在任何过错。本案情况能够构成医疗事故？为什么？
公司承担民事责任的物质保证是（）
