[单项选择]Engineers use the principles of aerodynamics in designing airplanes and other objects affected by aerodynamic forces.


A. laws
B. movements
C. studies
D. products

[单项选择]Engineers use the principles of aerodynamics in designing airplanes and other objects affected by aerodynamic forces.
A. laws
B. movements
C. studies
D. products

[单项选择]According to the science of aerodynamics, the shape of an object influences the amount of drag created by air flowing around it.
A. form
B. size
C. weight
D. interior

[单项选择]According to the science of aerodynamics,the shape of an object influences the amount of drag created by air flowing around it.


A. form
B. size
C. weight
D. interior

[单项选择]What principles most influenced scientific thought for two thousand years

[单项选择]Civil engineers of ancient times were intelligent enough to build entire cities, including______.
A. systems of pipes, bridges, and pyramids
B. pipeline systems, bridges and farmlands
C. water supply systems, bridges, and pipelines for cultivation
D. water supply systems, bridges and structures

[单项选择]What invention incorporated the principles of light and radio radiation


A. satellite communication
B. X-ray
C. the laser beam
D. continuous wave

[单项选择]The engineers are going through with their highway project, in spite that the expenses have risen.（　）
A. just because
B. even though
C. as though
D. now that

[单项选择]A pervasive negative attitude of the engineers toward projects funded by his company is the cause of the delay of signing the contract.
A. perpetual
B. pernicious
C. preventive
D. prevalent

[单项选择]

Text 1
Last November, engineers in the healthcare division of GE unveiled something called the "Light Speed VCT", a scanner that can create a startlingly good three-dimensional image of a beating heart. This spring Staples, an American office-supplies retailer, will stock its shelves with a gadget called a "wordlock", a padlock that uses words instead of numbers. The connection In each case, the firm’s customers have played a big part in designing the product.
How does innovation happen The familiar story involves scientist in academic institutes and R&D labs. But lately, corporate practice has begun to challenge this old, fashioned notion. Open source software development is already well-known. Less so is the fact that Bell, an American bicycle helmet maker, has collected hundreds of ideas for new products from its customers, and is putting several of them into production. Not only is the customer king: now he is market-resear
A. should be patented and rewarded with money.
B. is costless thanks to its creator's goodness.
C. has come into the view of more people.
D. couldn't be protected by patent law.

[单项选择]Many of the scientists and engineers are judged ______ how great their achievements are.


A. in spite of
B. in ways of
C. in favor of
D. in terms of

[单项选择]Engineers are studying the dolphin's skin and shape __________.


A. to learn how fast it can swim
B. to discover the value of the dolphin
C. because dolphins are good swimmers
D. because they like swimming very much