Mechanicorp’s newest product costs so little to make that it appears doubtful the company will be able to sell it without increasing the markup the company usually allows for profit: potential clients would simply not believe that something so inexpensive would really work. Yet Mechanicorp’s reputation is built on fair prices incorporating only modest profit margins.
The statements above, if true, most ply support which of the following

A．Mechanicorp will encounter difficulties in trying to set a price for its newest product that will promote sales without threatening to compromise the company’s reputation.

B．Meehanicorp achieves large annual profits, despite small profits per unit sold, by means of a high volume of sales.

C．Mechanicorp made a significant computational error in calculating the production costs for its newest product.

D．Mechanicorp’s newest product is intended to perform tasks that can be performed by other devices costing less to manufacture.

E．(E) Mechanicorp’s production processes are designed with the same ingenuity as are the products that the company makes.

可以降低精馏塔压力的操作有（）。

A、提高回流量

B、增加进料量

C、降低塔釜温度

D、降低生产负荷