中枢性尿崩症可见于:()
A.下丘脑-垂体部位肿瘤
B.头部创伤
C.脑部感染性疾病
D.视上核、视旁核神经细胞退行性变
E.肾小管疾病
参考答案:A, B, C, D
He can speak English ______ Japanese, ______ he can't speak Chinese. [ ]
A. and; and
B. but; and
C. and; but
D. but; but
为了保证胀管的质量,在凝汽器正式胀管前,应进行试胀。