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【单选题】
产后乳房的护理,下列哪正确的
A.
产后12h虽无乳汁分泌,亦应授乳
B.
产后乳胀,可肌内注射麦角新碱
C.
产后乳胀,腋窝处触及与皮肤粘连的硬结应按乳腺炎治疗
D.
一侧乳腺炎,要求回乳时,只有在患侧敷皮硝
E.
产妇体温39℃以上,若乳房无炎症,仍可授乳
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【单选题】下列哪项不能作为诊断二尖瓣关闭不全的依据
A.
临床症状及体征
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】二尖瓣关闭不全患者最常见的症状和体征是
A.
劳力性呼吸困难
B.
意识错乱
C.
肌酸磷酸激酶浓度增加
D.
胸痛
E.
咯血
【单选题】从水中萃取水溶性生物碱所采用的溶剂是
A.
乙醇    
B.
乙醚    
C.
三氯甲烷  
D.
正丁醇    
E.
【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
A.
行二尖瓣置换术后用抗生素6周
B.
静滴氨苄青霉素,每日12g,用4周
C.
静滴青霉素G2400万U/d,持续6周
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 in conjunction with the wildcard mask to determine the number of hosts on a network
B.
It is used to define which parts of the IP address are allocated to host addresses and network prefixes
C.
It is used to hide subnets from external networks by masking the subnets with NAT
D.
It is used to differentiate a network as a classful network or a classless network
【简答题】二尖瓣关闭不全的症状和体征 ?
【判断题】太阳光谱主要由发射线谱构成
A.
正确
B.
错误
【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
【单选题】In a type of computer network, what does MAN stands for?
A.
Major area network
B.
Mini area network
C.
Metropolitan area network
D.
None
【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
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