乳母膳食钙的适宜摄入量(AI)为()
A.600mg/d
B.800mg/d
C.1000mg/d
D.1200mg/d
E.1500mg/d
参考答案:D
解下列方程:
(1)x2-8x=0;
(2)x2-4x-5=0;
(3)m2-2m-1=0.
失代偿性代酸()
A.pH7.30PaO50mmHg,PaCO80mmHg
B.pH7.35PaO80mmHg,PaCO20mmHg
C.pH7.25PaO65mmHg,PaCO30mmHg
D.pH7.40PaO60mmHg,PaCO65mmHg
E.pH7.38PaO50mmHg,PaCO40mmHg