【单选题】下列哪项不能作为诊断二尖瓣关闭不全的依据
B.
心电图检查QRS波群低电压,Ⅰ、Ⅱ导联T波平坦或倒置
C.
X线检查左心房显著扩大,主动脉弓缩小,食管被扩大的左心房推向右后方
D.
超声心动图检查左心室前后径增大,左心房显著增大
E.
心尖区听诊闻及粗糙吹风样收缩期杂音,并向腋部传导
【单选题】下列诊断二尖瓣关闭不全的依据中,错误的是
B.
心电图检查QRS波群低电压,Ⅰ、Ⅱ导联T波平坦或倒置
C.
X线检查左心房显著扩大,主动脉弓缩小,食管被扩大的左心房推向右后方
D.
超声心动图检查左心室前后径增大,左心房显著增大
E.
心尖区听诊闻及粗糙吹风样收缩期杂音,并向腋部传导
【简答题】可编程序控制器程序的表达方式基本有()、()、逻辑功能图和高级语言。
【单选题】女性,23岁,既往无心脏病史,流产后一周,出现急性细菌性心内膜炎,伴二尖瓣关闭不全的症状及体征,血培养有粪链球菌生长,最适宜的治疗为
D.
静点氨苄青霉素,每天12g,庆大霉素3mg/(kg•d),持续4周
E.
静点万古霉素,每天1g,持续4周,链霉素每天1g,用2周
【单选题】What is the purpose of a network mask?()
A.
It is used to identify the maximum hop count of a subnetwork
B.
It is used to identify an IP address as either private or public
C.
It is used to identify the network to which an IP address belongs
D.
It is used to identify the total number of bits present in an IP address
【判断题】可编程序控制器程序的表达方式基本有梯形图、指令表、逻辑功能图和高级语言。()
【单选题】克洛西是个残胳膊的孩子,他的妈妈卖野菜,他曾把墨水瓶打在老师的胸部,老师的处理方法是( )
A.
严厉批评了4个欺负克洛西的孩子,并饶恕了那4个孩子。
【单选题】What is the goal of QoS in a network? ()
A.
prevent packets from being dropped
B.
increase available bandwidth
C.
reduce hardware errors
D.
provide predictable network service
E.
eliminate propagation delay
F.
eliminate jitter and packet loss