下载APP
则A=_______，k=________
举一反三
【单选题】按照《母婴保健法》规定，从事医学技术鉴定的人员，必须具有
A.
医学遗传学知识，并具有满4年住院医师工作经验
B.
临床经验，并具有主治医师以上的技术职务
C.
临床经验和医学遗传学知识，并具有主治医师以上的技术职务
D.
临床经验和医学遗传学知识，并具有副主任医师以上的技术职务
E.
临床经验和医学遗传学知识，并具有医学硕士学历和主治医师以上的技术职务
【单选题】(2015年)设函数f(χ)在(－∞，＋∞)内连续，其2阶导函数f〞(χ)的图形如图所示，则曲线y＝f(χ)的拐点个数为 【 】
A.
0．
B.
1．
C.
2．
D.
3．
【单选题】Playing violent video games can have immediate and lasting effects on a person’s thoughts and behavior, new research shows. In fact, researchers report that the interactive and increasingly graphic ma...
A.
asked game players to blast the loser in the violent video games
B.
observed the behavior of game players when playing violent video games
C.
put game players into a real fight in a small room with aggressive opponents
D.
observed game players’ reaction to their imaginary opponents in competitive games
【单选题】输入序列为ABC，可以变为CBA时，经过的栈操作为____。【中山大学1999年】
A.
push，pop，push，pOp，push，pop
B.
push，push，push，pOp，pOp，pop
C.
push，push，pop，pOp，push，pop
D.
push，pOp，push，push，pOp，pop