单选题What is the basic concept of GMDSS? （）A Search and rescue authorities ashore can be alerted to a distress situationB Shipping in the immediate vicinity of a ship in distress will be rapidly alertedC Shoreside authorities and vessels can assist in a coo

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单选题

What is the basic concept of GMDSS? （）

Search and rescue authorities ashore can be alerted to a distress situation

Shipping in the immediate vicinity of a ship in distress will be rapidly alerted

Shoreside authorities and vessels can assist in a coordinated SAR operation with minimum delay

All of the above

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相似问题和答案

第1题：

听力原文： It's no secret that throughout history common stock has outperformed most financial instruments. If an investor plans to have an investment for a long period of time, then their portfolio should be comprised mostly of stocks ; however, investors who don't have this kind of time should diversify their portfolios. For this reason, the concept of "asset allocation" was developed. Asset allocation is an investment portfolio technique that aims to balance risk and create diversification by dividing assets among major categories. The underlying principle of asset allocation is that the older a person gets, the less risk he or she should face. After you retire you may have to depend on your savings as your only source of income.

28. Throughout history, what kind of stock has outperformed most financial instruments?

29.What is the purpose of asset allocation?

30.What is the principle underlying the concept of asset allocation?

(28)

A．preferred stock

B．common stock

C．concept stock

D．cynical stock

正确答案：B
解析：录音原文一开始就提到It's no secret that throughout history common stock has outperformed most financial instruments，纵观历史，普通股表现优于其他绝大多数金融工具不是秘密。

第2题：

The classic semantic triangle fails to answer()

A what precisely the link between the symbol and the concept is

B what symbol/form. refers to

C what referent refers to

D what thought/reference refers to

答案：A

第3题：

What are the basic principles of positive error correction?

参考答案：1) As far as possible, encourage the students, focussing on what they have got right, not on what they have got wrong. 2) Praise the students for correct answers, and even for partly correct answers; in this way, they will feel they are making progress. 3) Avoid humiliating students or making them feel that making a mistake is ‘bad’. 4) Correct errors quickly; if too much time is spent over correcting errors, it gives them too much importance and holds up the lesson.

第4题：

What are the vessel equipment and personnel requirements for GMDSS ________．

A.Two licensed GMDSS radio operators

B.Equipment carriage requirements

C.Distress alerting and response

D.All of the above

正确答案：D

第5题：

The basic concept of a data(72)is the difference between data and information.

A．warehouse

B．storage

C．base

D．service

正确答案：A
解析：数据仓库的基本概念就是数据和信息的不同。

第6题：

All ______ is a continuous supply of the basic necessities of life.

A what is needed

B the things needed

C for our needs

D that is needed

参考答案：D

第7题：

What are the four basic Data Flow steps of an ETL process?

在ETL过程中四个基本的过程分别是什么？

正确答案：
答：
Kimball数据仓库构建方法中，ETL的过程和传统的实现方法有一些不同，主要分为四个阶段，分别是抽取（extract）、清洗（clean）、一致性处理（comform）和交付（delivery），简称为ECCD。
1．抽取阶段的主要任务是：
读取源系统的数据模型。
连接并访问源系统的数据。
变化数据捕获。
抽取数据到数据准备区。
2．清洗阶段的主要任务是：
清洗并增补列的属性。
清洗并增补数据结构。
清洗并增补数据规则。
增补复杂的业务规则。
建立元数据库描述数据质量。
将清洗后的数据保存到数据准备区。
3．一致性处理阶段的主要任务是：
一致性处理业务标签，即维度表中的描述属性。
一致性处理业务度量及性能指标，通常是事实表中的事实。
去除重复数据。
国际化处理。
将一致性处理后的数据保存到数据准备区。
4．交付阶段的主要任务是：
加载星型的和经过雪花处理的维度表数据。
产生日期维度。
加载退化维度。
加载子维度。
加载1、2、3型的缓慢变化维度。
处理迟到的维度和迟到的事实。
加载多值维度。
加载有复杂层级结构的维度。
加载文本事实到维度表。
处理事实表的代理键。
加载三个基本类型的事实表数据。
加载和更新聚集。
将处理好的数据加载到数据仓库。
从这个任务列表中可以看出，ETL的过程和数据仓库建模的过程结合的非常紧密。换句话说，ETL系统的设计应该和目标表的设计同时开始。通常来说，数据仓库架构师和ETL系统设计师是同一个人。

第8题：

Thus, the anthropological concept of“culture,”like the concept of“set”in mathematics, is an abstract concept which makes possible immense amounts of concrete research and understanding.

正确答案：

因此，人类学中“文化”概念就像数学中“集”的概念一样，是一个抽象概念，它使大量的具体研究和认识成为可能。

第9题：

What is the minimum requirement of a GMDSS operator?

A.GMDSS operator license

B.Third officer license

C.General Radiotelephone Operator license and Radar Endorsement

D.General Radiotelephone license or First or Second Class Radiotelegraph license with GMDSS Radio Officer’s endorsement

正确答案：A

第10题：

What is a benefit of NTLMSSP over basic authentication？（）

A、 basic cannot be used in transparent proxy mode
B、 basic requiresreauthentication with every new domain
C、 NTLMSSP is compatible with open LDAP
D、 NTLMSSP is more secure than basic

正确答案:D

What is the basic concept of GMDSS? （）

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