支气管扩张症常见的最有意义的体征是()
A.贫血貌
B.端坐呼吸
C.局限性哮鸣音
D.固定性湿啰音
E.消瘦
参考答案:D
After many years of hard work,Mary and her husband had at last paid ________all the money they had borrowed.
A.for
B.out
C.in
D.off
下列平均数中,被称为位置平均数的有( )
A.算术平均数
B.调和平均数
C.几何平均数
D.中位数
E.众数