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【多选题】
画分层DFD图的基本原则有A.
数据守恒原则
B.
分解的可靠性原则
C.
子、父图平衡的原则
D.
数据流封闭的原则
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【简答题】某销售人员预借差旅费 2000 元,以现金支票支付
【单选题】Heidelberg's Willy Hellpack School is a school _______ of .
A.
languages
B.
mathematics
C.
economics
D.
happiness
【单选题】Please don ’ t make so much noise. I _______ hear the speaker very well.
A.
needn ’ t
B.
can ’ t
C.
mustn ’ t
D.
woudn't
【单选题】Heidelberg's Willy Hellpach School is a school of _____.
A.
languages
B.
mathematics
C.
economics
D.
happiness
【单选题】Don－t do any other things while you are doing your homework． So please_________your
A.
14． Don-t do any other things while you are doing your homework． So please_________ your MP3． A． turn up
B.
turn down
C.
turn on
D.
turn off
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