【单选题】屈强比愈小,反映钢材受力超过屈服点工作时的( )
【单选题】The doctor tried his best to save the patient's life, ____ failed.
【判断题】西周时,缔结婚姻关系,男女双方都必须严格服从“父母之命,媒妁之言”。
【单选题】The patient's life was expected to last several years longer by implanting the artificial heart.
【单选题】The doctor did all he could ____ the patient's life.
【单选题】The doctors tried their best to save the patient's life,_____ failed.
【简答题】翻译 我们公司准备购买更多的生产性设备。(productive)