The pressure ________ causes Americans选择

_____uses one or two high pressure pumps for all the cylinders with one more____ standby, while______have a separate high－pressure pump for each cylinder.

Early fuel injection timing is indicated by the cylinder pressure being ________.

A pressure drop in the liquid line of a refrigeration system may cause________.A.the solen

The pressure of too much homework has led to an evident _______ among the students. A.

The greatest challenge for the Americans is understanding the ________ of Eastern Eu

Many of the conditions that______population pressures—overcrowding, unemployment, poverty,