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【单选题】
关于恶性贫血,叙述错误的是()
A.
多数患者50~70岁发病
B.
有贫血、胃肠道症状、神经系统症状和体征
C.
淋巴细胞介导的自身免疫反应使胃壁细胞破坏,内因子分泌障碍所致
D.
因手术切除胃组织引起的内因子缺少不属于恶性贫血
E.
治疗上需要终身补充维生素B 12 ,宜口服给药
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【单选题】下列铵盐中,受热分解时不放出 NH3 的是
A.
NH 4 Cl
B.
(NH 4 ) 3 PO 4
C.
(NH 4 ) 2 CO 3
D.
NH 4 NO 3
【判断题】数字视频可以包括深度信息。
A.
正确
B.
错误
【单选题】关于膜蜗管的描述,哪项错误
A.
其上方为前庭阶,下方为鼓室阶
B.
下壁为基底膜和骨螺旋板外侧部
C.
内有螺旋器
D.
血管纹与外淋巴的产生有关
【判断题】空间数据库系统和工程数据库系统属于专用数据库系统。( )
A.
正确
B.
错误
【单选题】April 21 was the national memorial day ____ were killed in Yushu Earthquake on April 14 2010.
A.
in honor of any one who          
B.
in celebration of  those who
C.
in memory of  whoever          
D.
in charge of  no matter who
【单选题】Memorial Day is originally a day on which Americans honor the soldiers who died in .
A.
World War I
B.
World War II
C.
the Independence War
D.
the American Civil War
【判断题】Memorial Day is a federal h oliday.
A.
正确
B.
错误
【单选题】Americans celebrate Memorial Day on the last Monday in May to honor those who have
A.
given their lives for their country.
B.
made great scientific discoveries.
C.
won American great reputation in sports.
D.
donated large amounts of money to the country.
【单选题】关于膜蜗管的描述哪一项是错误的( )
A.
属于膜迷路
B.
其上方为前庭阶,下方为鼓室阶
C.
下壁为基底膜和骨性螺旋板
D.
下壁内有壶腹嵴
【单选题】Memorial Day is a US national holiday to remember those who gave their lives in the service of the nation. [     ]
A.
set aside
B.
put up
C.
put on
D.
set up
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