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How can an operator list all its

题目

How can an operator list all its history of commands in one step?（）

  • A、Run c -l 0?from the command line.Run ?c -l 0?from the command line.
  • B、Invoke SMIT for the shell environment.
  • C、Run the SC + H?combination at the command prompt.Run the ?SC + H?combination at the command prompt.
  • D、Use a rep?command with its UID against the /var/log/history_cmds file.Use a ?rep?command with its UID against the /var/log/history_cmds file.
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相似问题和答案

第1题：

(b) ‘Strategic positioning’ is about the way that a company as a whole is placed in its environment and concerns its

‘fit’ with the factors in its environment.

With reference to the case as appropriate, explain how a code of ethics can be used as part of a company’s

overall strategic positioning. (7 marks)


正确答案：
(b) Code of ethics and strategic positioning
Strategic positioning is about the way that a whole company is placed in its environment as opposed to the operational level,
which considers the individual parts of the organisation.
Ethical reputation and practice can be a key part of environmental ‘fit’, along with other strategic issues such as generic
strategy, quality and product range.
The ‘fit’ enables the company to more fully meet the expectations, needs and demands of its relevant stakeholders – in this
case, European customers.
The ‘quality’ of the strategic ‘fit’ is one of the major determinants of business performance and so is vital to the success of
the business.
HPC has carefully manoeuvred itself to have the strategic position of being the highest ethical performer locally and has won
orders on that basis.
It sees its strategic position as being the ethical ‘benchmark’ in its industry locally and protects this position against its parent
company seeking to impose a new code of ethics.
The ethical principles are highly internalised in Mr Hogg and in the company generally, which is essential for effective strategic
implementation.

第2题：

An operator wants to move all files inside the directory ／home／operator to the current directory. Which of the following commands will complete the task?()

A. mv /home/operator .

B. mv /home/operator/* .

C. mv /home/operator ../..

D. mv /home/operator/all ../home/operator


参考答案：B

第3题：

Its somewhat ambitious title was "The Book of Life", and it attempted to show how much an observant man might learn by an accurate and systematic examination of all that came in his way.

_______________________________________________________________________________


正确答案：
这篇文章稍有炫耀的标题是“生命之书”。它想证明一个善于观察的人通过对他经历到的一切事情都进行真正、系统的考察可以学到多少东西。

第4题：

Which maintenance functions can a GMDSS Radio Operator perform ________．

A.The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percent

B.The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstacles

C.All levels of maintenance must be performed by a licensed GMDSS Radio Maintainer

D.The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints


正确答案：B

第5题：

Which statement about the gyrocompass is FALSE ________．

A.Its accuracy remains the same at all latitudes

B.It seeks the true meridian

C.It can be used near the Earth's magnetic poles

D.If an error exists，it is the same on all headings


正确答案：A

第6题：

How many orders are included in standard ship orders? Can you list some?


正确答案：There are four orders included in the standard ship orders. They are the helm orders, anchor orders, mooring and unmooring orders, and the engine orders.

第7题：

A tow can override its tug as a result of ______.

A.a mechanical breakdown on the tug

B.adverse tidal current conditions

C.the tug reducing its speed

D.All of the above


正确答案：D

第8题：

Which of the following statements about object oriented database is not correct?

A．Each object has a unique object identity in the system.

B．Encapsulation and inheritance are two important features of object oriented database

C．A subclass can inherit the attributes and methods of all its superclasses

D．A superclass includes the attributes and methods of all its subclasses


正确答案：D

第9题：

When the GMDSS Radio Operator on watch hears“SECURITE”spoken three times he can expect to receive a message concerning ______．

A.The safety of navigation or important meteorological warnings

B.The safety of a vessel or a person is in jeopardy

C.A vessel in need of immediate assistance

D.A coast station traffic list


正确答案：A

第10题：

The columbine flower,（ ）to nearly all of the United States,can be raised from seed in\almost any garden.

A.native
B.how native is
C.how native is it
D.is native

答案：A
解析：
该题考查句子结构。该句主干为The columbine flower can be raised...，可见空格处应是一插入语做定语或同位语成分，首先排除选项D（不合句子结构），B、C选项语意不通，故答案为A，其中native为形容词做定语修饰其前的the columbine flower，“be native to sth.”意为“（动植物）原产的，天生的”。

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