皮皮学，免费搜题
登录
搜题
【简答题】
假设请你来定量研究A动物蛋白对生长的影响。请分析回答： 【资料】饲料中的蛋白含量一般低于20％； 普通饲料可维持正常生长； A动物蛋白有可能用于饲料生产。 【饲料】 l基础饲料：基本无蛋白质的饲料。 2普通饲料（含12％植物蛋自）：基础饲料+植物蛋白。 3试验饲料：基础饲料+A动物蛋自。 【实验分组】 备注：的性别组成、大小、月龄、喂饲量和饲养环境均相同。 实验组6中，Ⅰ应该为（），原因是（）；Ⅱ应该为（），原因是（）。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】—How wide is the river? —It's _____. [     ]
A.
100 metres wide.
B.
100 metre wide
C.
100-metre-wide
D.
100-metres-wide
查看完整题目与答案
【单选题】执行 ( ) 命令操作 , 元气件按右端对齐
A.
Align Right
B.
Align Top
C.
Align Left
D.
Align Bottom
查看完整题目与答案
【单选题】Not only (there is) (a wide range of) prices for goods in the city, there is (also) a wide range in the quality of goods (on sale).
A.
there is
B.
a wide range of
C.
also
D.
on sale
查看完整题目与答案
【单选题】Let us take ______ photo! Everyone, cheese! (2014 河北 )
A.
a
B.
an
C.
the
D.
/
查看完整题目与答案
【单选题】Let us take care of the house while you are away, ______ ?
A.
shan't we
B.
shall we
C.
don't you
D.
will you
查看完整题目与答案
【单选题】目前非洲猪瘟无有效疫苗防控的原因()
A.
非洲猪瘟病毒无免疫原性
B.
非洲猪瘟病毒无反应原性
C.
非洲猪瘟病毒存在免疫抑制
D.
非洲猪瘟病毒与亚洲猪瘟存在中和反应
E.
非洲猪瘟病毒产生的抗体仅能降低病毒感染性，并不中和病毒
查看完整题目与答案
【单选题】Let us take a brief look at the planet on which we live. As Earth hurtles through space at a speed of 70,000 miles an hour, it spins, as we all know, on its axis, which causes it to be flattened at th...
A.
it is about 20 to 40 miles thick
B.
it is thin in proportion to the earth's mass
C.
it is softer than the central core
D.
it is thinner than the surrounding layer
查看完整题目与答案
【单选题】在窗体应用程序设计时,窗口打开时触发的事件是以下哪一个 ?
A.
Click
B.
MenuStart
C.
Load
D.
MouseMove
查看完整题目与答案
【单选题】The ______river is ______used by people.
A.
wide wide
B.
widely wide
C.
wide widely
查看完整题目与答案
【单选题】Let us take care of the house while you are away，________？ [     ]
A.
will y ou
B.
shall we
C.
shan’t we
D.
don’t you
查看完整题目与答案
相关题目：
【单选题】—How wide is the river? —It's _____. [     ]
A.
100 metres wide.
B.
100 metre wide
C.
100-metre-wide
D.
100-metres-wide
查看完整题目与答案
【单选题】执行 ( ) 命令操作 , 元气件按右端对齐
A.
Align Right
B.
Align Top
C.
Align Left
D.
Align Bottom
查看完整题目与答案
【单选题】Not only (there is) (a wide range of) prices for goods in the city, there is (also) a wide range in the quality of goods (on sale).
A.
there is
B.
a wide range of
C.
also
D.
on sale
查看完整题目与答案
【单选题】Let us take ______ photo! Everyone, cheese! (2014 河北 )
A.
a
B.
an
C.
the
D.
/
查看完整题目与答案
【单选题】Let us take care of the house while you are away, ______ ?
A.
shan't we
B.
shall we
C.
don't you
D.
will you
查看完整题目与答案
【单选题】目前非洲猪瘟无有效疫苗防控的原因()
A.
非洲猪瘟病毒无免疫原性
B.
非洲猪瘟病毒无反应原性
C.
非洲猪瘟病毒存在免疫抑制
D.
非洲猪瘟病毒与亚洲猪瘟存在中和反应
E.
非洲猪瘟病毒产生的抗体仅能降低病毒感染性，并不中和病毒
查看完整题目与答案
【单选题】Let us take a brief look at the planet on which we live. As Earth hurtles through space at a speed of 70,000 miles an hour, it spins, as we all know, on its axis, which causes it to be flattened at th...
A.
it is about 20 to 40 miles thick
B.
it is thin in proportion to the earth's mass
C.
it is softer than the central core
D.
it is thinner than the surrounding layer
查看完整题目与答案
【单选题】在窗体应用程序设计时,窗口打开时触发的事件是以下哪一个 ?
A.
Click
B.
MenuStart
C.
Load
D.
MouseMove
查看完整题目与答案
【单选题】The ______river is ______used by people.
A.
wide wide
B.
widely wide
C.
wide widely
查看完整题目与答案
【单选题】Let us take care of the house while you are away，________？ [     ]
A.
will y ou
B.
shall we
C.
shan’t we
D.
don’t you
查看完整题目与答案