胸部X线常有不同程度梗阻性肺气肿和支气管 周围炎或肺不张
A.毛细支气管炎
B.腺病毒肺炎
C.金黄色葡萄球菌肺炎
D.肺炎链球菌肺炎
E.肺炎支原体肺炎
参考答案:A
CO2的弥散能力是O2的多少倍()
A.7
B.10
C.15
D.20
E.25
In the figure above, P and S are points on the x-axis. What is the area of square PQRS ?()
(1)The coordinates of point P are (2, 0)
(2)The coordinates of point R are (6, 4)
A.条件(1)充分,但条件(2)不充分.
B.条件(2)充分,但条件(1)不充分.
C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.
D.条件(1)充分,条件(2)也充分.
E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.