亚急性感染性心内膜炎最常见的并发症是
A．心力衰竭B．肾小球肾炎C．迁移性脓肿D．细菌性动脉瘤E．脑栓塞与脑脓肿
参考答案：A
下列家庭用水习惯中，你认为既科学又经济的是（ ）
A．洗澡擦香皂时不关喷头
B．洗碗筷时不间断地冲洗
C．洗菜、淘米、洗衣的水用来浇花、拖地、冲厕所
D．洗手、洗脸、刷牙不随时关闭水龙头
Which vessel is NOT to be regarded as restricted in her ability to maneuver?（）.
A.A vessel transferring provisions while underway
B.A pushing vessel and a vessel being pushed when connected in a composite unit
C.A vessel servicing a navigation mark
D.A vessel launching aircraft
