皮皮学，免费搜题
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【单选题】
严重肝功能不良时，全身用药不宜选用何种糖皮质激素A.
氢化可的松
B.
泼尼松
C.
地塞
D.
倍他米松
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举一反三
【单选题】The first compass, called a sinan, was invented __________.
A.
in the Han Dynasty
B.
in the Western Zhou Dynasty
C.
in the Shang Dynasty
D.
during the Warring States Period
【单选题】According to ancient records, natural magnets were employed in China as direction-finding devices. This led to the first compass, called ( ) during the Warring States Period.
A.
Si Nan
B.
wet compass
C.
dry compass
D.
navy compass
【单选题】According to ancient records, natural magnets were employed in China as direction-finding devices. This led to the first compass, called ( ) during the Warring States Period.
A.
wet compass
B.
Si Nan
C.
dry compass
D.
navy compass
【单选题】According to ancient records, natural magnets were employed in China as direction-finding devices. This led to the first compass, called ____during the Warring States Period.
A.
Si Nan
B.
navy compass
C.
wet compass
D.
dry compass
【简答题】为80C51单片机扩展行列式按键，1个并行口最多可以扩展______个按键。
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