皮皮学，免费搜题
登录
搜题
【判断题】
中国的创业活动目前进入了起步阶段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】When I got on the bus， I __ I had left my wallet at home.
A.
was realizing
B.
realized
C.
have realized
D.
would realize
【简答题】Still, many people are buying the large, round fruit. Pumpkins are an important part of the American celebration of Halloween on October thirty-first. Many families visit farms or farmers’ markets so ...
【多选题】一个单位负反馈系统的开环传递函数为【图片】，试确定系统阶跃响应的动态性能【图片】,【图片】,【图片】。(取【图片】=5%)（ ）
A.
=16.3%
B.
=4.3%
C.
=2.42s , =6s
D.
=1.22s , =8s
【单选题】Not until then _____ their marriage was breaking up because they had little in common.
A.
did I realize
B.
I realized
C.
had I realize
D.
has I realized
【判断题】Carved pumpkins are used to scare away vampires, according to some superstitious people.
A.
正确
B.
错误
【多选题】一个单位负反馈系统的开环传递函数为【图片】，试确定系统阶跃响应的动态性能【图片】,【图片】,【图片】。(【图片】=5%)（ ）
A.
=16.3%
B.
=4.3%
C.
=2.42s , =6s
D.
=1.22s , =8s
相关题目：