下列各项中不属于甲减的临床表现的是()
A.记忆力减退,反应迟钝
B.畏寒
C.面色苍白,皮肤干燥发凉
D.食欲亢进、体重减轻
E.声音嘶哑、低沉
参考答案:D
It is when the plane ______ that you’d better find out at the booking office.
A.would take off
B.had taken off
C.was taking off
D.is taking off
常用的A/D转换器有哪几种类型?