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【单选题】
CRH1的盘形制动装置有（）形式。A.
1种
B.
2种
C.
3种
D.
4种
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举一反三
【单选题】Obligatory parasite is
A.
A parasite must be parasitized in the special part of the host in its whole life cycle
B.
A parasite that must parasitize in host or otherwise survive throughout its life cycle
C.
At least one life cycle period must lead a parasitic life
D.
A parasite always needs special hosts throughout life cycle
【多选题】What is facultative parasite?
A.
The parasite can't survive when they leave the host.
B.
The parasite can survive when they leave the host.
C.
parasite live freely in the enviornment.
D.
parasites live in the host permanent.
【单选题】气象部门针对当地每天收集的各种气象预报参数进行统计、分析和计算，把复杂的气象信息数字归纳成10项简单易懂的气象指数，简而言之，气象指数就是按从适宜到不适宜的原则对天气状况划分成不同等级，一般分为4—5级。以感冒指数为例，感冒指数越高就意味着这一时期患感冒的几率越高。 在众多气象指标中，诱发感冒的主要因素是（）。
A.
气温突变
B.
降水概率
C.
相对湿度
D.
风速
【单选题】How do the parasite drag and the induced drag change as the speed increase ?
A.
the parasite drag increases and the induced drag increase
B.
the parasite drag increases and the induced drag decrease
C.
the parasite drag decrease and the induced drag increase
【简答题】气象部门针对当地每天收集的各种气象预报参数进行统计、分析和计算，把复杂的气象信息数字归纳成10项简单易懂的气象指数，简而言之，气象指数就是按从适宜到不适宜的原则对天气状况划分成不同等级，一般分为4—5级。以感冒指数为例，感冒指数越高就 意味着这一时期患感冒的几率越高。在众多气象指标中，诱发感冒的主要因素是（ ）。
【单选题】The parasite's life cycle means:
A.
The maturation of female and male worms
B.
The process of growth, development and reproduction in the final host
C.
The whole life or a complete generation of the parasite
D.
The process of growth and development
【单选题】Which parasite is opportunistic parasite?
A.
Entamoeba histoltica
B.
Plasmodium falciparum
C.
Toxoplasma Gondi
D.
Leishmania Donovani
【简答题】寄生虫(parasite)
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