放射性肺炎描述错误的是（）
A.放射野密度增高影
B.肺纤维化
C.不伴支气管扩张
D.边缘平直
E.纵隔移位
参考答案：C
氯离子的结构示意图为，则氯原子的最外层电子数为[ ]
A.1
B.2
C.7
D.8
— _______ you got to know my telephone number?
— Through a friend of yours.
A．How was it
B．How was it that
C．Was it how that
D．How did
，则氯原子的最外层电子数为[ ]