滴定氯离子操作中不会用到的化学药品是（）。
A.硝酸银
B.铬酸钾
C.稀盐酸
D.酚酞试剂
参考答案：C
Li Ming is a student who is easy ___ though he has some trouble ____ his lessons.
A．to be got along with, in
B．to get along with, with
C．to get along, in
D．getting along with, with
下列不属癌性空洞X线特点的是（）
A.偏心空洞
B.外壁可见分叶
C.壁厚超过1.5cm
D.薄壁空洞周围肺野可见纤维索条
E.空洞直径大于3cm
