A centrifugal pump vibrates excessively during operationUpon disassembling the pump it is found that the impeller is out of balanceWithout an available spare, you should （）.
You（） buy some reference books when you go to the college.
When accepting engine room spares, you should（）
When order spare part, you can directly fall back on （）
According to Buys Ballot’s law，when an observer in the Northern Hemisphere experiences a northwest wind，the center of low pressure is located to the（）.
15. Nowadays when you buy a house in a big city, you have to lots of money.
Will you buy me _____ stamps when you go out?
According to the author, what should people consider when buying a house along the south coast of England?
Even if you could buy the world, you could not buy a happy family, good friends, or knowledge.
—I may go to the market this afternoon.—Could you please buy some fruit for me ________ you are there?
When you buy anything expensive, you should ask the dealer to give you the _______.
When you buy clothes, you must consider the material, quality and price.
You want to buy a new house for $41,750, and the finance office at the dealership has quoted you an 8.6 percent APR loan compounded monthly for 48 months to buy the car. What is the effective interest rate on this loan?
The presentation of your product is so important ____ it often determines whether a customer buys from you .
It ____ you to at least 50% off the regular price of either frames or lenses when you buy both.
What function is money serving when you buy a ticket to a movie？______.
Franchise means you buy a license to trade under the name of the ___________ and you benefit from its expertise.
In order to know if you can make a return on your investment，assess how you can add to the company you are buying．
When an investor is buying stock as an investment, the value of most direct concern is
When you buy a T-shirt, or a fur coat in a store, it often carries a label （标签) telling
A driver wishes to buy gasoline and have her car washed.She finds that the wash costs $3.00 when2 she buys 19 gallons at $ 1.00 each, but that if she buys 20 gallons, the car wash is free.Thus the marginal cost of the twentieth gallon of gas is: ().
Buying the spare parts for your car,you should try to get the______ones from the authorized dealer.
You are buying from the market when you_____（）
What does the doctor mean by saying You have to start somewhere（Par2）（）
