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【单选题】
设R为实数集,函数 , ,则 是( )。A.
而非满射
B.
而非单射
C.
D.
既不是,也不是
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举一反三
【多选题】Which TWO of the following are symptoms of poor corporate governance?
A.
Lack of board involvement.
B.
Bonuses for directors.
C.
The finance director also performing the role of company secretary.
D.
Inadequate supervision.
【单选题】一60岁男性患者,劳力性呼吸困难3年,双下肢水肿两周,查体:口唇发绀,颈静脉怒张,心率118次/分,律齐,S1S2均减弱,P2>A2,心尖部可闻及室性奔马律及3/6级收缩期杂音,肝肋下可及,双下肢水肿,为帮助诊断,最需做
A.
心电图
B.
超声心动图
C.
测定静脉压
D.
心电向量图
E.
胸部X线
【单选题】一名60岁的男性患者，劳力性呼吸困难3年，双下肢水肿半月，查体：口唇发绀，颈静脉怒张，心率110次／分钟，律齐，S1、S2均减弱，P2>A2，心尖部闻及室性奔马律及3／6级收缩期杂音，肝脾肿大，双下肢水肿，为正确诊断，最需做的是（）
A.
心电图
B.
超声心动图
C.
测静脉压
D.
心电向量图
E.
胸部X线检查
【多选题】Which of the following are symptoms of poor corporate governance?
A.
Lack of board involvement
B.
Bonuses for directors
C.
The finance director also performing the role of company secretary
D.
Inadequate supervision
【多选题】Which two of the following are symptoms of poor corporate governance?
A.
Lack of board involvement
B.
Bonuses for directors
C.
The finance director also performing the role of company secretary
D.
Inadequate supervision
【判断题】Depressive symptoms, such as low mood, loss of pleasure and poor concentration
A.
正确
B.
错误
【简答题】治疗伤寒，可选用
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