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【单选题】
患者,男性,20岁,因患大叶性肺炎需青霉素治疗。皮试5min后病人出现胸闷、气急、皮肤瘙痒、面色苍白、脉搏细弱、血压下降、烦躁不安。针对上述情况,护士首先采取的急救措施是A.
立即平卧,皮下注射盐酸肾上腺素
B.
立即皮下注射肾上腺素
C.
立即静脉注射地塞米松
D.
立即注射呼吸兴奋药
E.
立即注射升压药
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举一反三
【单选题】Who ________ a theory about black holes?
A.
put forward
B.
put down
C.
put away
D.
put off
【单选题】The word 'orator' originally meant speaker but now it signifies the person who makes speech. This is an example of ______.
A.
narrowing of meaning
B.
widening of meaning
C.
meaning shift
D.
loss of meaning
【单选题】The sports meet, originally _____ this week, has to be put off because of the bad weather. [ ]
A.
held
B.
holding
C.
having been held
D.
to be held
【简答题】结晶器的振动方式有（）、（）、（）、非正弦振动。
【简答题】Who put the fire out? ___________________.
【单选题】The word 'orator' originally meant speaker but now it signifies the person who makes speech. This is an example of ______.
A.
narrowing of meaning
B.
widening of meaning
C.
meaning shift
D.
lass of meaning
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