患者胃脘刺痛,痛有定处而拒按,食后痛甚,舌质紫暗,脉涩。其证候是()。
A.气机阻滞
B.食积气阻
C.瘀血停滞
D.血瘀血虚
E.气虚血瘀
参考答案:C
现行PC机所用的打印机与主机间最常用的接口是( )。
A.RS-232C接口
B.IDE接口
C.USB接口
D.Centronics接口
We learn that Bill Clinton’s father ______.
A.died before Bill Clinton was born
B.died when Bill Clinton was a few months old
C.left his wife after Bill Clinton was born
D.was his mother’s second husband