Which of the following options is characteristic sign of mitral stenosis? ()
A. The first sound is increased.
B. The second sound is splitting.
C. A third sound (S3) may be found.
Diastolic rumbling murmur at apex.
E. The cardiac dullness extends to leftward.
查看答案
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
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
微信支付 
支付宝支付