公称直径为100的燃气设施，应用下列（）表示。

[单选题]在ISDN网络中，U接口定义在（）之间

[问答题]Passage 1Questions l—7　　● Look at the statements and the company news reports below.　　● Which news reports(A, B, C or D)does each statement 1—7 refer to?　　● For each sentence1—7, mark one letter(A, B, C, or D)on your Answer Sheet.　　● You will need to use some of the letters more than once.　　Example：　　0 The applicant need have a skill of communication.　　1. This job would be unsuitable if you were looking for long—term employment.　　2. In this job, you would have to report to more than one person.　　3. In this job, the official working hours will change from week to week.　　4. Previous experiences is actually not required for this job.　　5. The successful applicant must be prepared to work long hours for this job.　　6. This company likes to promote people from within the firm.　　7. The knowledge of computer skills would help you get this job.　　A　　Marketing Secretary　　We are seeking a brilliantly organised and mature department secretary to act as PA to the Head of Marketing and provide administrative support to three other busy department heads. The successful applicant must have strong secretarial skill and knowledge of up-to-date information technology. A good sense of humour and excellent communication skills are essential.　　B　　Science Marketing Assistant　　This Position would suit a recent science graduate with an interest in developing a career in marketing in publishing environment. Marketing experience is preferable but not essential as full training will be given. The company also has a strong internal recruitment policy.　　C　　Assistant Museum Manager　　Reporting directly to the Manager. Your role will be to help improve visitor services. The flexible 35-hour week will regularly involve working weekends and evenings. Previous experience of working in a similar role is required. This is initially a one-year appointment but may be extended.　　D　　International Management Consultant　　Suitable bilingual applicants will have worked in a similar position here or abroad for at least two years. Excellent communication and presentation skills are vital, as is the willingness to invest the necessary time in order to succeed in a highly competitive and challenging market.

[单选题]现行部颁人工预算单价计算标准中，年应工作天数为（）工日。

[单选题]对于过敏性紫癜哪一项是不正确的？（　　）

[问答题]柴油发电机在运行工作中突然停机，原因有哪些？

[判断题]“树缝里也漏着一两点路灯光，没精打采的，是渴睡人的眼。”涉及到的是辞格连用，连用了暗喻和拟人辞格。（）

[单选题]既可治疗咳嗽、气喘，又可治疗头项疾患的是（　　）。

[单选题]诊断急性坏死性龈炎时主要根据临床特征，但也有辅助诊断方法，其方法是（）。

[单选题]有关牙槽骨松质骨的描述，不正确的是（）

[多选题]医务人员在下列哪些情况下必须洗手。（）

[单选题]公称直径为100的燃气设施，应用下列（）表示。

[名词解释题]公称直径

[问答题]什么叫公称直径？

[填空题]公称直径是指（）。

[问答题]什么是公称直径？

[判断题]圆锥销的公称直径是指小端直径

[单选题]圆锥销的公称直径是指（）直径

[单选题]圆锥销的公称直径是指（）直径。

[单选题]圆锥销的公称直径是指（）直径。

[填空题]DN80是指公称直径（）PN4.0指公称压力（）。