After taking glipizide (Glucotrol) for 9 months, a client experiences secondary failure. Which of the following would the nurse expect the physician to do

A．Initiate insulin therapy.

B．Switch the client to a different oral antidiabetic agent.

C．Prescribe an additional oral antidiabetic agent.

D．Restrict carbohydrate intake to less than 30% of the total caloric intake.

投运前灰浆泵所有表计指示为额定值。