【单选题】“当商品经济发展到一定阶段,出现巨型垄断性生产企业,而零售企业仍然数量众多、规模较小,具有充分的竞争性。”上述描述是那种类型供应链为主体的背景条件。
【单选题】Which of the following statements is correct concerning the viscosity of lubricating oil?
A.
Viscosity will increase as temperature increases
B.
Viscosity is a measure of a fluid s internal resistance to flow
C.
Viscosity will decrease as temperature decreases
D.
Viscosity is not dependent on temperature
【单选题】Petroleum products, such as gasoline, kerosine, home heating oil, residual fuel oil, and lubricating oil, all come from one source — crude oil found below the earth' s surface, as well as under large ...
A.
Crude oil is found below land and water.
B.
Crude oil is always found a few hundred feet below the surface.
C.
Pumping and pressure force crude oil to the surface.
D.
A variety of petroleum products is obtained from crude oil.
【单选题】Petroleum products, such as gasoline, kerosine, home heating oil, residual fuel oil, and lubricating oil, all come from one source -- crude oil found below the earth' s surface, as well as under large...
A.
Crude oil is found below land and water.
B.
Crude oil is always found a few hundred feet below the surface.
C.
Pumping and pressure force crude oil to the surface.
D.
A variety of petroleum products is obtained from crude oil.