病程中出现进行性呼吸困难和紫绀。呼吸40次/分,血氧分压50mmHg。两肺呼吸音低。X线胸片示片状阴影,部分融合。临床应采取何种急救措施。
A. 面罩给氧
B. 加大抗生素用量
C. 加大吸入氧流量
D. 输注白蛋白
E. 机械通气
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"So we were then ready to start. " means we ______
A. had already started the work
B. had everything we needed to begin the job
C. were always ready to do file work
用垂直图表示施工流水表达方式与横道图表示比较,其特点为()。
A. 施工过程及其先后顺序表达清楚
B. 时间和空间状况形象直观
C. 编制实际工程进度计划比横道图方便
D. 斜向进度线的斜率可以直观地表示出各施工过程的进展速度
A.121 dollars.B.374 dollars.C.53 dollars.D.232 dollars.
A. 121 dollars.
B. 374 dollars.
C. 53 dollars.
D. 232 dollars.