皮皮学，免费搜题
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【单选题】
冬季,某猪场引种1,部分引入母猪体温41-42°C,厌食。流产,腹部和后肢皮肤发紫,并迅速传播至全场,抗生素治疗无效,与疫情密切相关的因素是(2017 真题上184)A.
引入带毒种猪
B.
运输应激
C.
鼠类活动频繁
D.
寒冷季节
E.
使用抗生素
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皮皮学刷刷变学霸
举一反三
【单选题】Young people may grow quickly in some ways and more slowly in ______.
A.
the other
B.
some other
C.
others
D.
these others
【单选题】169.0、192.168.170.0、192.168.171.0将这四个C类地址合并成一个超网应该使用最合理的子网掩码是( )
A.
255.255.248.0
B.
255.255.255.0
C.
255.255.252.0
D.
255.255.224.0
【单选题】对于IP地址 192.168.168.0 、192.168.169.0、192.168.170.0 、192.168.171.0将这四个 C 类地址合并成一个超网应该使用最合理的子网掩码是()
A.
是255.255.248.0
B.
是255.255.255.0
C.
是255.255.252.0
D.
是255.255.224.0
【简答题】Some people succeed，while others may not．This is because some people possess certain qualities，which others do not． The first thing you must remember is that in order to succeed，you must be optimistic...
【简答题】扫描隧道显微镜的英文字母缩写是 。
【单选题】Some People Do Not Taste Salt Like Others Low-salt foods may be harderfor some people to like than others, according to a study by a Penn StateCollege of Agricultural Sciences food scientist. The rese...
A.
it is healthy to eat food without salt
B.
many people reject low-salt food completely
C.
food with less salt tastes better
D.
many people accept low-salt tasteless food reluctantly
【单选题】对于IP地址192.168.168.0、192.168.169.0、192.168.170.0、192.168.171.0将这四个C类地址合并成一个超网应该使用最合理的子网掩码是（）。
A.
255.255.248.0
B.
255.255.255.0
C.
255.255.252.0
D.
255.255.224.0
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