将决策区分为单目标与多目标决策的根据是()。
A．决策目标的多寡
B．决策目标的复杂程度
C．决策目标的种属
D．决策目标的结构
参考答案：A
— Hello, may I have an appointment with the doctor?
— ____
A．Sorry, he is busy at the moment.
B．Why didn’t you call earlier?
C．Certainly. May I know your name?
D．Sorry, he doesn’t want to see you.
风湿性心肌炎的临床表现下列哪项是错误的
A．出现早搏和心动过速
B．心率增快
C．心前区第一心音减弱
D．严重时可出现奔马律
E．心尖区可听到隆隆样收缩期杂音
