第21题: [单项选择]Cuts in funding have meant that equipment has been kept in service long after it ______ replaced.
A. should have been B. would have been C. could have been D. might have been 参考答案:A 答案解析:【翻译】资助削减意味着设备将在应该更换之时,超期服役。
【解析】情态动词用法
第22题: [单项选择]机泵安装所用斜垫铁斜度宜为()。 A. 1/15~1/20 B. 1/10~1/20 C. 1/10~1/30 D. 1/15 参考答案:B