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【单选题】
下列哪个选项是音频的格式?A.
AVI
B.
MIDI
C.
WMV
D.
MP4
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反馈参考答案：
举一反三
【单选题】价值工程的目标是（ ）。
A.
尽可能地使产品具备尽可能多的功能
B.
以最低的生产成本使产品具备尽可能多的功能
C.
以最低的寿命周期成本使产品具备必要功能
D.
以最低的寿命周期成本使产品具备尽可能多的功能
【单选题】— You must keep the door _______ when you leave your room. — But I want to get the fresh air. I think I can keep the window ________ instead.
A.
close, opened
B.
open, closed
C.
closing, open
D.
closed, open
【单选题】I enjoy fresh air so I always sleep with the window open it is really cold. [ ]
A.
unless
B.
when
C.
if
D.
since
【简答题】肥皂盒建模.docx
【单选题】—I do believe the scientific explanation that when a tomb is opened, the fresh air disturbs the viruses inside it. What about you? —So do I. If _______ in, the disturbed viruses may cause illness or e...
A.
breathing
B.
breathed
C.
being breathed
D.
to breathe
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