甲状腺炎声像图表现是()。
A.甲状腺缩小,回声增强
B.弥漫性甲状腺肿大回声无改变
C.甲状腺内多个无回声
D.弥漫性甲状腺肿大回声减低
E.甲状腺体积增大,回声增强
参考答案:D
Urban (城市) crowdedness would be greatly relieved if only the ______ charged on public transport were
more reasonable.[ ]
A. fees
B. payments
C. fares
D. costs
外加热强制循环蒸发器有何优缺点?