关于流感嗜血杆菌的说法，正确的是（）

A.为革兰阴性球菌

B.为革兰阳性杆菌

C.产生外毒素

D.为革兰阳性球菌

E.培养基中常加入V因子和X因子

Which statement about the hospital space on a cargo ship is TRUE（）.

A.The hospital may be used for disciplinary confinement if it is not being used for treatment

B.The hospital space must have both a bathtub and shower

C.A hospital is required on all vessels with a crew of 12 or more if it makes overnight voyages

D.If a ship has a crew of forty-five who do not have their own room，the hospital must have four berths