选用压力表时，介质压力应在表量程的（）。
A.前1/2
B.1/2~2/3
C.1/3~2/3
D.1/2~1~3
参考答案：B
—What do you have for breakfast?
—I often have ________ or ________.
A．breads; noodles
B．bread; noodles
C．breads; noodle
D．bread; noodle
下列宜用于短期静脉输液治疗的输液工具有（）。
A.钢针
B.PVC
C.PICC
D.CVC
E.PORT
