婴幼儿血维生素A水平低于多少μg/L即构成维生素A缺乏症()。 A.100 B.20

题型:单项选择题 A1型题

问题:

婴幼儿血维生素A水平低于多少μg/L即构成维生素A缺乏症()。

A.100

B.200

C.300

D.400

E.500

考点:眼科专业知识与专业实践能力常见全身疾病的眼部表现常见全身疾病的眼部表现题库
题型:单项选择题 A1型题

The early morning fire damaged the historic Gallad House today. It destroyed the third floor of the building so fire fighters saved the first and the second floors. There were only a few elderly people live in the building at the time and they carried out to safety. The Gallad House was built in 1718 and was used for a hotel for over 150 years. George Washington stayed in here in 12. The Gallad family owned the building for the elderly. Several fire department were called to the scene. When Fire Chief Andrew Bond asked when the fire started, he answered that perhaps a burning cigarette caused it. Chief Bond had promised to further examine the cause.

题型:单项选择题 A1型题

下列情况可使肺泡呼吸音减弱的是()。

A.发热

B.贫血

C.运动

D.甲状腺功能亢进

E.胸腔积液

题型:单项选择题 A1型题

壮热,大汗不止,突然体温下降,四肢厥冷,面色苍白,脉微欲绝者,证属

A.上热下寒

B.表寒里热

C.真寒假热

D.热证转化为寒证

题型:单项选择题 A1型题

消石灰粉使用前应进行陈伏处理是为了()。

A.有利于硬化

B.消除过火石灰的危害

C.提高浆体的可塑性

D.使用方便

题型:单项选择题 A1型题

胆固醇是下列化合物前物,但除外()

A.胆汁酸

B.维生素D3

C.雄激素

D.雌激素

E.绒毛膜促进腺激素

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