He didn't go home _______ he finished his homework. [ ]
A. when
B. if
C. until
D. that
答案:C
阿米巴肝脓肿()
A.起病急骤严重,中毒症状明显
B.起病后不久即发生中毒性休克
C.肿大的肝脏表面有不规则结节
D.病程较长,偶有发热、腹泻
E.突发右上腹剧痛,发热可伴有黄疸
35/10(6)kV变电所不宜设在有火灾危险区域的正上面或正下面。()