钢绞线按结构分为以下几类()
A、(1×7)I
B、(1×3)E
C、1×3I
D、1×7
参考答案:C, D
患者,女性,25岁,风心病主动脉瓣狭窄,近3周来乏力不适就诊。体检:皮肤有少量淤点,主动脉瓣区有收缩期和舒张期杂音,脾可触及。血红蛋白为80g/L。本病例最可能的诊断是()
A.风心病心衰
B.贫血性心脏病
C.风湿性心肌炎
D.风心病合并风湿活动
E.风心病合并感染性心内膜炎
—What are we going to do on Sunday?
—How about _____? [ ]
A. to go bike riding
B. going bike to ride
C. going to bike riding
D. going bike riding