皮皮学，免费搜题
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搜题
【单选题】
以下哪类跑腿服务允许发布？A.
午餐、书信
B.
陪聊天、逛街
C.
提供粉末类快递服务
D.
代买车票
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
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.
【简答题】寄生虫(parasite)
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