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【单选题】
当HlV侵入机体后,未进入发病期者被称之为:A.
艾滋病病人
B.
艾滋病病毒感染者
C.
窗口期
D.
健康携带者
E.
以上都不是
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皮皮学刷刷变学霸
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【简答题】计算机网络中利用多台计算机并行解决复杂问题的功能称 。
【单选题】Long ago, man used to ______ with his hands but now man is used to ______ with machines, and sometimes a robot is used to ___ instead of people.
A.
work, working, work
B.
work, working, working
C.
working, work, working
D.
working, work, work
【单选题】Computers in everyday life in this country before long .
A.
will be used
B.
is used
C.
will use
D.
was used
【单选题】He _________ long curly hair but my hair ______ very straight and short.
A.
used to be, used to have
B.
used to have , used to be
C.
used to be, used to be
D.
used to have , used to have
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