男，7个月。体重5.5kg。母乳喂养，量少，未加辅食。体检：神志清，精神可，稍苍白，腹部皮下脂肪0.5cm，肌肉稍松弛。可能诊断是（）

A.正常儿

B.Ⅰ度营养不良

C.Ⅱ度营养不良

D.Ⅲ度营养不良

E.佝偻病

How many adult life jackets are required on board a ship?（）

A.Enough for 100 percent of the persons allowed on board

B.One for each work station and industrial work site

C.Enough for 150 percent of the persons allowed on board

D.Both A and B above