一般来说,韵腹是()的元音,(如a,o,e)只有当韵母中没有其它元音成分时,()的元音(如i,u,
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患者,男,26岁。目赤红肿,口舌生疮,咽喉肿痛,口渴,舌质红,苔黄燥。治疗应首选的药物是()。
A. 麝香
B. 远志
C. 冰片
D. 苏合香
E. 石菖蒲
Which three technologies are used to reduce chromatic dispersion accumulation in fiber-optic transmission systems? ()(Choose three.)
A. PIN photodiodes
B. zero-chirped lasers
C. Erbium-doped fiber amplifiers
D. dispersion compensating fiber
E. dispersion compensating Bragg grating
患者,男性,70岁,半年前外伤后,出现一下肢无力,查体出现如下图步态。请出此患者为什么步态()
A. 划圈样步态
B. 剪刀样步态
C. 慌张步态
D. 醉汉步态
E. 跨阈步态