In spite of setbacks and（）his business was at last making money. ["compliments","predictions","reversals","complement"]
闭式泵电机额定电流是多少？备用泵联动的条件是什么？
《供电营业规则》第四十三条规定：供电企业接到用户的受电装置（）及（）后，应及时组织检验。对检验不合格的，供电企业应以（）用户改正，改正后方予以再次检验，直至合格。
乙炔燃烧时，绝对禁止用（）灭火机来灭火。 ["四氯化碳","二氧化碳","干粉"]
Your wish to go for a walk does not justify（）the baby alone in the house. ["leaving","having left","to leave","to have left"]
开式泵倒转有什么危害？
