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【单选题】
高血压紧急处理的关键是A.
绝对卧床休息
B.
降低颅内压
C.
迅速降低血压
D.
给予吸氧
E.
限制钠盐摄入
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举一反三
【单选题】The English vocabulary is known for a (an) ______ of words which are comparatively seldom used in ordinary conversations.
A.
multitude
B.
altitude
C.
latitude
D.
platitude
【单选题】Theis is one of the most interesting questions that ____ asked.
A.
have
B.
has
C.
have been
D.
has been
【简答题】根据下图推测，CsCl晶体中两距离最近的Cs ＋ 间距离为a，则每个Cs ＋ 周围与其距离为a的Cs ＋ 数目为________；每个Cs ＋ 周围距离相等且次近的Cs ＋ 数目为________，距离为________；每个Cs ＋ 周围距离相等且第三近的Cs ＋ 数目为________，距离为________；每个Cs ＋ 周围紧邻且等距的Cl － 数目为________。
【简答题】Theis is one of the most interesting questions that ____ (be) asked.A. have been
【单选题】下列反应中,ΔH与ΔU相差最大的是( )
A.
C(s) + Si(s) → SiC(s)
B.
C(s) + 1/2 O 2 (g) → CO(g)
C.
C(s) + O 2 (g) → CO 2 (g)
D.
2C(s) + 3H 2 (g) → C 2 H 6 (g)
【单选题】不用计算,试确定下列反应中 ΔH 与 ΔU 相差最大的是( )
A.
C ( s ) + Si ( s ) = SiC ( s )
B.
C ( s ) + 1/2 O 2 ( g ) = CO ( g )
C.
C ( s ) + O 2 ( g ) = CO 2 ( g )
D.
2C ( s ) + 3H 2 ( g ) =C 2 H 6 ( g )
【简答题】(Fill in the blanks with the words given below. Change the form where necessary. Each word can be used only once. ) (boost; prospect; calculate; accelerate; promote; mystery; destruction; ysis; in...
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