Which of the following is common microorganism causing Sub-acute Infective endocarditis ()? ()
A. staphylococcus
B. streptococcus
C. tubercle bacillus
D. gram-negative bacteria
E. fungus
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which is arterial blood gas criteria of respiratory failure under the condition of room air breathing during rest at sea level of altitude. ()
A. PaO2
B. PaO2 ≤ 60mmHg and /or PaCO2>45mmHg
C. PaO2 50mmHg
D. PaO2 60mmHg
E. PaO2 45mmHg
Determinant positive standard of bronchial dilation test is()
A. FEV1 improved rate≥12%
B. FEV1 improved rate≥300ml
C. FEV1 improved rate≥18%
D. FEV1 improved rate≤200ml
E. FEV1 improved rate≥20%
Which is not tumors markers?()
A. carcinoembryonic antigen ( CEA)
B. CA 15-3
CA 549
D. LDH
E. CA 125
which is not the symptom of COPD?()
A. excessive cough
B. sputum production
C. shortness of breath
D. weight loss
E. hemoptysis
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