右心功能不全的患者,较早出现的症状是()
A.心悸胸闷
B.劳力性呼吸困难
C.颈静脉曲张
D.腹胀、食欲下降
E.下肢凹陷性水肿
参考答案:D
I wonder what it feels like to be one of______really rich. The Jenkinsons already have two Rolls Royces and now they are buying ____ third!
A.the; a
B.the;the
C./;a
D./;the
甲、乙两人进行射击比赛,在相同条件下各射击10次.他们的平均成绩均为7环,10次射击成绩的方差分别是:S甲2=3,S乙2=1.2.成绩较为稳定的是( )。