怀疑椎动脉开口部狭窄患者,行椎动脉造影时,导管头端应放置在()
A.椎动脉开口部
B.主动脉弓
C.锁骨下动脉椎动脉开口部近端
D.锁骨下动脉椎动脉开口部远端
参考答案:C
One of the few things you __ _ say about English people with certainty is that they talk a lot about the weather.
A.need
B.must
C.should
D.can
冠心病患者的饮食原则是()
A.低高热量、低脂肪
B.高热量、高蛋白质
C.低热量、低盐
D.低胆固醇、低动物脂肪
E.高蛋白、低动物脂肪