西交《专业英语》在线作业

adminhan

She would make a teacher far (_______) to the average.
A:superior
B:better
C:favorable
D:popular

The system's characteristic equation can be used to determine _____ of a linear time-invariant system.
A:the stability
B:magnitude of the steady-state error
C:the controllability
D:the observability

What would you like to have, meat or fish?      ---  (_______) .
A:Either will do
B:Yes, I like meat
C:Yes, I like fish
D:No, they are not my favorite

Tom didn’t come to class yesterday. He (_______) ill.
A:must be
B:should be
C:must have been
D:should have been

________ a concert next Saturday?
A:There will be
B:Will there be
C:There can be
D:There are

In the form of (  ) the output is continuously fed back and compared with the reference input.
A:continuous control
B:discontinuous control
C:discrete-data control
D:sampled-data control

My motorcar was stolen.
  ----- (_______) .
A:I’m sorry to hear that
B:It doesn’t matter
C:everybody knew
D:Mine wasn’t

A transformer is a device that can convert one ac voltage to another ac voltage through the action of _____.
A:an electric circuit
B:a magnetic field
C:an electric field
D:a coupling circuit

My passport (_______) last month, so I will have to get a new one.
A:elapsed
B:expired
C:ended
D:terminated

I like to get up early so that I can get plenty of work (_______) before lunch.
A:done
B:being done
C:to do
D:to be done

In the root-locus method the actual time response of a system can be obtained by means of _____.
A:the inverse Fourier transform
B:the inverse Laplace transform
C:the Fourier transform
D:the Laplace transform

Delphi belongs to _____.
A:low-level programming language
B:high-level programming language
C:a programming language connected with the computer hardware behavior
D:an assembly language

The generator voltages are usually stepped up to the transmission voltage level by (  ).
A:series capacitor
B:parallel reactors
C:step-up transformers
D:step-down transformers

Lenin stressed that it is precisely the people who (_______) history.
A:invent
B:imagine
C:create
D:discover

<img width="556" height="157" alt="" src="http://file.open.com.cn/ItemDB/49176/d7efdc30-e4bf-4e10-920a-de5d97c35479/20145323383902.jpg" />1
A:A
B:B
C:C
D:D

The toy boat turned over and sank to the (_______) of the pool.
A:base
B:depth
C:ground
D:bottom

He (_______) the children so badly that they were terrified of him.
A:behaved
B:treated
C:dealt
D:acted

(  ) can provide an asynchronous link between two ac electric power system with different nominal frequencies.
A:The HVDC (high voltage DC) transmission
B:The EHV (extra-high voltage) AC transmission
C:The AC distribution
D:Generators

I think English is as ____ as math.
A:important
B:importanter
C:more important
D:most important

Lucy is ___ of all.
A:young
B:younger
C:youngest
D:the youngest

The objective of the optimal economic operation of power systems is _____.
A:to minimize the total production cost
B:to maintain frequency constant
C:to maintain voltages constant
D:to ensure balance between generation and load

These are all (_______) demands.
A:reasonable
B:available
C:logical
D:formal

After having a good holiday, they are very keen to (_______) business.
A:get along
B:get to
C:get in
D:get over

When Jack arrived, he learned Mary___for almost an hour.
A:had gone
B:had been away
C:had left
D:had away

The news came as no surprise to me, for I ____of it earlier.
A:hear
B:heard
C:have heard
D:had heard

Most desktop computers use a separate (  ) as a display device, where notebook computers use a flat panel LCD screen (liquid crystal display screen) that attached to the system unit.
A:keyboard
B:Mouse
C:Monitor
D:hard disk

I’ll make every (_______) to help you.
A:way
B:means
C:method
D:effort

The proposal seems quite good, but I can’t easily (_______) without all the facts.
A:join
B:judge
C:say
D:speak

Must I be home before seven?
  --- (_______) .
A:No, you needn’t
B:No, you mustn’t
C:OK
D:no, you won’t

_____ can provide an asynchronous link between two ac electric power system with different nominal frequencies.
A:The HVDC (high voltage DC) transmission
B:The EHV (extra-high voltage) AC transmission
C:The AC distribution
D:Generators

How much a man can earn depends (_______) his skills.
A:along
B:at
C:on
D:with

The new English book I bought yesterday (_______) me almost twenty yuan.
A:spent
B:paid
C:cost
D:owned

The story of George Washington and the cherry tree is (_______) every American school child.
A:known as
B:known to
C:known for
D:known in

Free medical treatment in this country covers sickness of mind as well as (_______) sicknesses.
A:normal
B:regular
C:average
D:ordinary

The Buck（降压式变换器） is a _____ converter.
A:voltage step-up
B:current step-down
C:current step-up
D:resistance

The discussion (_______) a wide range of subjects.
A:covered
B:conveyed
C:filled
D:concluded

It is generally considered unwise to give a child ____ he or she wants.
A:however
B:whatever
C:whichever
D:whenever

The government is taking effective measures to overcome (_______) difficulties.
A:average
B:radical
C:current
D:typical

They are proud (_______) their success.
A:of
B:in
C:on
D:over

What day is today?
   ---  (_______) .
A:Today is March 25th
B:Today is Saturday
C:Today is fine
D:Today is cold

He gave me money (_______) advice.
A:either
B:as well as
C:as well
D:also

<img width="514" height="53" alt="" src="http://file.open.com.cn/ItemDB/49176/d7bc672a-7e2a-4bfd-828d-04a25b50a97e/20145323398201.jpg" />1
A:A
B:B
C:C
D:D

Image clarity on a computer screen is measured with _____.
A:screen size
B:dot pitch
C:resolution
D:color depth

The generator voltages are usually stepped up to the transmission voltage level by _____.
A:series capacitor
B:parallel reactors
C:step-up transformers
D:step-down transformers

I would die (_______) marry him!" she screamed.
A:instead of
B:rather than
C:other than
D:more than

It was a (_______) illness, and she soon got over it.
A:little
B:minor
C:large
D:major

It is reported that two cars (_______) into each other this morning on the highway, killing both driver and two passengers.
A:crawled
B:crouched
C:pressed
D:crashed

The transformer is a straightforward application of Faraday’s ______ Law.
A:Ohm’s
B:Electromagnetic Induction
C:Kirchhoff’s Current
D:Kirchhoff’s Voltage

There __________ a meeting tomorrow afternoon.
A:will be going to
B:will going to be
C:is going to be
D:will go to be

Someone called me at midnight, but he hung up___I could answer it.
A:after
B:before
C:until
D:while