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【单选题】
8253的计数器的最大计数初值是( )。A.
65536
B.
FFFFH
C.
FFF0H
D.
0000H
E.
Y
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举一反三
【单选题】Researchers have found clear and convincing evidence ________ happiness is the key to better health and longer lives. [ ]
A.
where
B.
whether
C.
how
D.
that
【简答题】下列模式中，能够给出数据库物理存储结构与物理存取方法的是（ ）。
【单选题】The researchers found that there might be a high correlation between ______ .
A.
emotion and failure
B.
habits and success
C.
habits and emotions
D.
persistence and emotions
【单选题】Recently, researchers have found that it is something in our brain that causes our anxiety.
A.
Y
B.
N
C.
NG
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