皮皮学，免费搜题
登录
搜题
【判断题】
光缆采用发光二极管作为光源A.
正确
B.
错误
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】The California condor is the largest bird in North America. It is an endangered species. 20 years ago there were less than 30 birds left. All of the birds were trapped and kept in safe places. The num...
A.
shooting
B.
poisoning
C.
electrocution
D.
all of the above
【简答题】The factors that trigger migratory behavior in birds are difficult to explain. According to some scientists, migratory birds should be able to withstand the winter. A bird's feathery coat is good insu...
【简答题】Aggression in Humans and Animals 1 Man must be the most aggressive and cruel of all living creatures. We may say a violent man is behaving “ like a beast ” , but, in fact, no beast behaves as viol...
【简答题】The factors that trigger migratory behavior in birds are difficult to explain. According to some scientists, migratory birds should be able to withstand the winter. A bird’s feathery coat is good insu...
【简答题】Aggression in Humans and Animals 1 Man must be the most aggressive and cruel of all living creatures. We may say a violent man is behaving “ like a beast ” ,
but, in fact, no beast behaves as vio...
【简答题】The factors that trigger migratory behavior in birds are difficult to explain. According to some scientists, migratory birds should be able to withstand the winter. A bird's feathery coat is good insu...
相关题目：