下列哪一种不属于直接引入造影法（）
A.口服胆囊造影
B.钡餐检查
C.PTC
D.子宫输卵管造影
E.椎管造影
参考答案：A
Mary, 63, teaches painting, a skill she learned at a community college for senior citizens, while her husband Blare _______ head of the volunteer group.
A．makes for
B．brings up
C．takes on
D．serves as
美容院操作室内，允许（）。
A.员工热饭
B.员工就餐
C.美容、美发同室操作
D.设置换气扇
