尿纤维蛋白原降解产物(FDP)意义()

A．弥散性血管内凝血和原发性纤溶疾病，为(+)

B．肾病综合征为(-)

C．慢性肾小球肾炎为(+)

D．肾脏肿瘤为(+)

E．以上均不是

In small angle stability,the metacenteric height（）.

A.is found in the hydrostatic tables for a level vessel

B.multiplied by the displacement yields the righting moment

C.is always positive

D.is calculated by subtracting KG from KM