Too little carbon dioxide in the blood can lead to a condition called ___
A. alkalosis
B. acidosis
C. mental poisoning
D. plumbism
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Which one of the followings cannot stop foreign particles from entering the respiratory system?
A. tiny cilia in the bronchial cells
B. rapid muscle contraction
C. bronchial tube constriction
D. enlargement of the chest
_____are cells that can swallow up foreign particles in the bronchial tree.
A. platelets
B. erythroblasts
C. macrophages
D. epithelial cells
The measure of how easily the lungs expand under the pressure is _____
A. accommodation
B. compliance
C. spasm
D. resistance
数据库逻辑结构设计的基础是：
A. 物理设计
B. 概念设计
C. 流程设计
D. 数据设
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