骶管麻醉时(确定进针位置的标志)进针的定位标志是( )
A. 骶角
B. 骶管裂孔
C. 髂后上棘
D. 骶正中嵴
肱骨体中段骨折易损伤( )
A. 尺神经
B. 桡神经
C. 正中神经
D. 腋神经
在中国,扇子不仅是一种实用物品,还是一种艺术品和身份的象征. 文人手中也会拿着扇子这代表着智慧和儒雅Fans, shan zi, are not only ____, but also works of art and ____ in China. Shan zi in scholars’ hands represent ____.
中国有很多种扇子,而最具代表性的是折扇.折扇综合了雕刻、编织、书法、绘画等多种艺术技法There are many kinds of shan zi inChina. The most ____ ones are folding shanzi. Techniques of ____, weaving, ____ and painting are applied