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【单选题】
8 月份,某养殖场2000 只30 日龄肉鸡,食欲不振,精神沉郁,羽毛松乱,腹泻, 排水样稀粪,鸡冠苍白,病死率20%,剖检见,肌肉与脏器出血,肌肉与内脏器官 上见针尖至粟粒大小的白色结节。该病可初步诊断为A.
隐孢子虫病
B.
球虫病
C.
组织滴虫病
D.
弓形虫病
E.
住白细胞虫病
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举一反三
【单选题】Which of the following descriptions is INCORRECT?
A.
Second-hand clothing and household articles may be economical.
B.
Prices vary considerably in the US.
C.
Most second-hand clothes are of rather good quality.
D.
You may go to a 'loan closet' to loan clothes at a low cost.
【简答题】账户余额一般与（ ）在同一方向。
【简答题】My father often said that it was only because my grandmother was so economical that the wolves were kept at bay 。
【单选题】What's the reason for the popularity of second-hand items?
A.
People have a preference for unconventional things.
B.
People think old clothes are better than the new.
C.
People like second-hand items because they are cheap.
D.
The young people like to go with the stream.
【简答题】由一个基本铰接三角形依次增加二元体而组成的桁架称为_______________,由几个简单桁架按照几何不变体系的组成规则组成的桁架称为_____________,按上述两种方式以外组成的其它静定桁架称为_____________。
【简答题】什么是计算机的冯·诺依曼结构？
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