AD258机器打印复印时文字不规则变淡（）
A.驱动板故障
B.激光故障
C.显影仓内有异物进入
D.转印辊接触不良
参考答案：C
A client with bicuspid aortic valve has severe stenosis and is scheduled for valve replacement. While teaching the client about his condition and upcoming surgery, the nurse shows him a heart illustration. Which valve will be replaced ？（）
A．A
B．B
C．C
D．D
迂回式劝服即循循善诱，通过有意识、有步骤的引导，澄清事实，讲清利弊得失，使游客逐渐信服。( )
