Sometimes it is desirable to connect a member both by riveting and welding. Which statement is TRUE concerning this procedure? （）
A . Tearing through the member is more likely in this type connection
B . The weld may be broken by the stresses caused by riveting
C . The weld increases the tensile stress on the rivet heads
D . The welding must be completed before the riveting commence
相似题目
-
Why is it desirable to operate paralleled AC generators at the same power factor?（）
A . Circulating currents are kept to a minimum
B . Field excitation losses are kept to a minimum
C . Generator rotors will have a lesser tendency to hunt
D . Because a power factor increase will decrease kilowatt output
-
It is sometimes necessary to moor bow and stern to two mooring buoys in order to（）.
A . avoid any swing in a restricted space
B . shelter the ship from strong winds
C . prevent from touching with other vessels
D . make a convenience of cargo discharging
-
It is desirable that a certain method within a certain class can only be accessed by classes that are defined within the same package as the class of the method. How can such restrictions be enforced？（）
A . Mark the method with the keyword public.
B . Mark the method with the keyword protected.
C . Mark the method with the keyword private.
D . Mark the method with the keyword package.
E . Do not mark the method with any accessibility modifiers.
-
In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.
A . shock loading on the tow line is reduce
B . towing speed is improved
C . the vessel is more visible from the tug
D . the catenary of the tow line is reduced
-
If the scavenge fire is of a more major nature, if there is a risk of the fire extending or if the scavenge trunk is adjacent to the crankcase with risk of a hot spot developing it sometimes becomes necessary to （）the engine.
A . stop
B . start
C . speed up
D . slow dow
-
Very often the main idea of a paragraph is directly stated in the sentence, which is often found at the beginning of a paragraph; sometimes it is in the middle or at the end of the paragraph.
-
The cat is __________ beautiful animal, but its intelligence leaves much to be desired.
-
The director is always punctual for every meeting, even though it is sometimes inconvenient.
-
The Israeli city Tel Aviv, is sometimes called the White City for it has one of the largest concentration of Bauhaus buildings with plain white exteriors.
-
Water is__________ because it desires nothing and contends for nothing.
-
What is a youth? Impetuous fire. What is a main? Ice and desire. The world wags on. A rose will bloom. It then will fade.
-
The key for its success is its response to the urgent desire of countries along the belt and road to strengthen mutually beneficial cooperation, the idea of openness and inclusiveness shared by all the people in the world.
-
Feelings, emotions, and desires must subordinate themselves ______ reason because they sometimes could be irrational and biased.
-
When we are engaged in reading an interesting novel, sometimes we forget the time, not realizing it is getting dark until we finish the book. This is a case of…
-
It is sad to see that sometimes manufacturers and sellers may _____ together to sell expired food.
-
Although many people view conflict as bad, conflict is sometimes useful_____it forces people to test the relative merits of their attitudes and behaviors.
-
It is sometimes hard for people to understand that a creative genius, like a writer, composer, or artist, doesn't always lead a we U-regulated life.
-
It happens to all of us sometimes, doesn’t it？ You have a deadline to meet，but instead of doing your work, you check Facebook or do some on line shopping.This is called procrastination, and it affects everyone.So how can you stop procrastinating？
We often procrastinate because a task seems too big, or impossible to achieve.Try breaking down the task into smaller pieces.For example, instead of thinking，“I need to finish this essay by 10 p.m.tonight ” tell yourself,“I’ m going to make a short outline, fill that in, and then look for quotes.”
Another important factor is your environment, isn’t it？ If there are too many distractions in your work space, you may be tempted to procrastinate more.Are there any things in your work space (for example, a TV) that could be causing you to lose focus？
Making a timeline with goals and deadlines is a great way to stop yourself from procrastinating.
However, it is important to make your deadlines realistic so that you can be sure you’ll stick to them.
Some people like to wait for the perfect time to start a task, while the perfect time is often now.Try something called the Two-Minute Rule to help you get started.This idea comes from David Allen’ s best-selling book, Getting Things Done.It states that.if something takes less than two minutes， such as washing your dishes after a meal, then you should do it now.
1.Procrastination means().
A.putting your work off till later
B.doing your work quickly
C.doing your work carefully
D.doing your work well
2.Sometimes we procrastinate because a task seems too().
A.easy
B.small
C.fun
D.big
3.Having a TV in your work space is an example of an environmental().
A.distraction
B.reaction
C.attration
D.concentration
4.Setting realistic is a() good way to stop procrastinating.
A.environments
B.deadlines
C.focus
D.places
5.The Two-Minute Rule states that if something takes no more than two minutes, you should().
A.put it aside
B.do it later
C.do it now
D.wait for a moment
-
Sometimes the tension produced by fears is so great that we cannot suppress it. At such times we need to the tension by laughing or crying.
A．discard
B．disperse
C．disguise
D．discharge
-
20 Ireland is positioned at No．1 because it combines the most desirable elements of the new with some good elements of the old．
A Right
B Wrong
C Not mentioned
-
In such a case it is desired that the metal___at a lower temperature.
A．A.melt
B．B.must melt
C．C.would melt
D．D.had melted
-
The poetry of Ezra Pound is sometimes difficult to understand because it contains so many ________ references.
A) obscure
B) acute
C) notable
D) objective
-
From the author’s experience given in the last paragraph, we can conclude that to be a good matchmaker, sometimes it is better for one to be______.
A．frank
B．kind
C．hard working
D．critical
-
Is it difficult for you to get up in the morning？ Do you sometimes oversleep？ Are you often late for work or school？ Yes？ Then Hiroyuki Sugiyama of Japan has a special bed for you. Hiroyuki’s bed
188. Is it difficult for you to get up in the morning？ Do you sometimes oversleep？ Are you often late for work or school？ Yes？ Then Hiroyuki Sugiyama of Japan has a special bed for you. Hiroyuki’s bed will get you up in the morning! Here is how it works: The bed is connected to an alarm clock. First, the alarm clock rings. You have a few minutes to wake up. Next, a tape recorder in the bed plays soft music or other pleasant sounds. A few minutes later, a second recording plays. The second recording can be loud music or unpleasant sounds. If you don’t get up after the second recording, you’ll be sorry. A mechanical “foot” is in the bed. The mechanical foot kicks you in the head. Then the bed waits a few more minutes. What! You’re still in bed! Slowly, the top of the bed rises higher and higher. The foot of the bed goes lower and lower. Finally, the bed is vertical. You slide off the bed and onto the floor. You are awake and out of bed. Hiroyuki made his bed because he wanted to win a contest. He works for Honda Motor Company. Once every two years, Honda has a contest—the “All Honda Idea Contest”. In 1996 Hiroyuki won a prize for his bed. [共5题]
(1) The purpose of the passage is ________.
(A) to praise Hiroyuki
(B) to tell a story
(C) to introduce a special bed
(D) to wake somebody up
(2) What does the special bed do first in the morning？
(A) Its tape recorder plays soft music.
(B) Its tape recorder plays loud music.
(C) It kicks you in the head.
(D) Its alarm clock rings.
(3) If you don’t wake up after the clock rings, what will happen？
(A) The bed becomes vertical and you slide off the bed.
(B) The tape recorder plays pleasant sounds.
(C) You will be late for work.
(D) The mechanical “foot” kicks you in the head.
(4) Hiroyuki made such a special bed because ________.
(A) he wanted to win the contest held by his company.
(B) he was good at inventing new things.
(C) he wanted to make money.
(D) he sometimes overslept.
(5) Who is Hiroyuki？
(A) A scientist. (B) A company worker. (C) An inventor. (D) A carpenter.
