皮皮学，免费搜题
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【多选题】
可行性研究的特点包括:A.
可预见性
B.
先行性
C.
不定性
D.
未知性
E.
科学性
F.
法定性
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】图 13 所示电路,其中边沿 D 触发器中的 R 、 S 为直接清零端和直接置 1 端,高电平有效,触发器的初始状态为 0 。则当 CP 时钟第 6 个上升沿触发后,触发器的状态 为( )。
A.
1110
B.
0111
C.
0011
D.
1100
【单选题】How long did it take Byrd and his colleagues to fly from Little America to the South Pole and back?
A.
15 hours.
B.
16 hours.
C.
18 hours.
D.
19 hours.
【单选题】如题 图所示电路,其中边沿 D 触发器中的 R 、 S 为直接清零端和直接置 1 端,高电平有效,触发器的初始状态为 0 。则当 CP 时钟第 6 个上升沿触发后,触发器的状态 为( )。
A.
1110
B.
0111
C.
0011
D.
1100
【单选题】How long did it take Byrd and his colleagues to fly from Little America to the South Pole and back?
A.
19 hours.
B.
17 hours.
C.
18 hours.
D.
16 hours.
【简答题】“How many common English words were invented by Shakespeare?” How long did it take people to find the answer to this question 15 years ago? And now! you can google it and find the answer immediately! ...
【单选题】How long did it take the patient to resume her normal activity after the operation?
A.
24 hours.
B.
48 hours.
C.
About a week.
D.
Almost a month.
【简答题】How long did it take for a letter sent by a post rider to reach the addressee between New York and Boston?
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