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【单选题】
关于原子荧光光度计使用注意事项，下列说法正确的是( )。A.
所用的试剂不需要现用现配，可以过夜使用
B.
所用的试剂应为分析纯，所用的水应为二级水
C.
在仪器测量前，一定要开启载气
D.
更换元素灯时，可以带电插拔元素灯
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举一反三
【单选题】患者,男性,18岁。今日上体育课时突然发生左侧胸痛,呼吸时加重并伴呼吸困难而急诊入院。查体:BP 110/75mmHg,左肺呼吸音消失。最可能的疾病是:
A.
大叶性肺炎
B.
渗出性胸膜炎
C.
自发性气胸
D.
急性心肌梗死
E.
支气管肺癌
【单选题】Section BDirections:There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You sho...
A.
reach agreements with each other
B.
express their true feelings without worries
C.
communicate with each other more easily
D.
become more brave
【简答题】Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You s...
【单选题】Section Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked [A], [B], [C] and [D].You ...
A.
the present high unemployment figures are a fact of life
B.
new jobs .must be created in order to rectify high unemployment figures
C.
available employment must be most widely distributed among the unemployment
D.
available employment should be restricted to a small percentage of the population
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