某企业月初结存材料的计划成本为100 000元，成本差异为节约l 000元；本月入库材料的计划成本为100
A. 450
B. -450
C. 1 050
D. -1 050
查看答案
心衰代偿的方式除外
A. 交感神经兴奋
B. 提高前负荷
C. 肾素．血管紧张素一醛固酮系统激活
D. 精氨酸加压素系统激活
E. 迷走神经兴奋
W: Have you applied for the art director position？
M： No, I’d like to. But the job starts on the first of May and I wouldn’t be available until June.
Q： What does the man mean？
A. He would not be available to start the job in time.
B. He is not quite qualified for the art director position.
C. He would like to leave some more time for himself.
D. He will get his application letter ready before May 1.
以下对判断肺结核活动最有价值的指标是
A. 午后低热
B. 痰抗酸杆菌()
C. PPD试验强阳性
D. x线胸片示右肺上叶后段薄壁空洞
ESR l40mm／h
What did Mark and Tim have in common？
A. They are overweight for their age.
B. They are respectful to their parents.
C. They are still in their early twenties.
D. They dislike doing physical exercise.
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