男性，22岁，水样腹泻1天，粪便呈淘米水样，每次约500ml，共大便10余次，无腹痛，口渴，腓肠肌痉挛，粪检少许红白细胞。下列腹泻的原因可能为（）

A.胃泌素瘤

B.甲状腺功能亢进

C.霍乱

D.吸收不良综合征

E.急性胃肠炎

A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be（）.

A.labeled empty and recharged as soon as possible

B.replaced in its proper location if weight loss is no more than 25%

C.replaced in its proper location regardless of weight

D.replaced in its proper location if weight loss is no more than 15%