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【单选题】
每分通气量和每分钟肺泡通气量之差等于A.
肺活量×呼吸频率
B.
潮气量XIP乎吸频率
C.
残气量×呼吸频率
D.
无效腔气量×呼吸频率
E.
功能残气量×呼吸频率
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皮皮学刷刷变学霸
举一反三
【单选题】The people you find most diffcult can also be your most valuable teachers.
A.
dealing with
B.
to be dealt with
C.
to deal with
D.
being dealt with
【单选题】Even after he ______ as the most valuable employee, he could not gather enough courage to ask his boss for a raise.
A.
will be named
B.
had been named
C.
is named
D.
has been named
【简答题】影视广告的劣势是
【单选题】The author suggests that the most valuable resource in todays society is______.
A.
technology
B.
economic assets
C.
access to information
D.
time
【单选题】以下对二维数组a 的正确说明的语句是（ ）
A.
int a [3,4 ];
B.
float a (3,4);
C.
double a[3][4];
D.
float a (3)(4);
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