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【简答题】
系统经历一可逆正向循环及其逆向可逆循环后，系统和外界有什么变化？若上述正向及逆向循环中有不可逆因素，则系统及外界有什么变化？
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【简答题】计算计的软件系统通常分成（）软件和（）软件。
【简答题】计算机的软件系统通常分成()软件和()软件
【简答题】If you use your mobile phone as a watch, be careful that you do not look like taking text messages while speaking with others. Because frequent checking messages show that you are________
【单选题】听力原文：I tell you you'll be playing with fire if you go alone into that neighborhood at night. It's a place where almost anything can happen to you if you don't watch out. What does the speaker say abou...
A.
One should be very careful when entering into that dangerous neighborhood.
B.
That neighborhood is a mess with many construction works underway.
C.
Almost everything can be bought within that neighborhood.
D.
That neighborhood caught a fire one night recently.
【简答题】计算机的软件系统通常分成( 1 )软件和( 2 )软件
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