【简答题】中英匹配。 emergency negative fuel employ (1)_________n. 紧急情况;突发事件;adj.紧急的,应急的; (2)_________vt. 雇用;使用,利用;n.受雇;服务;工作 (3)_________n. 燃料; vt. 给...加燃料 (4)_________adj. 消极的,否认的;n.否定词语;vt.否...
【单选题】The marginal principle states that "we should increase the level of an activity as long as:
A.
its marginal benefit exceeds it marginal cost."
B.
its marginal cost exceeds its marginal benefit."
C.
its total benefit exceeds its total cost."
D.
its total cost exceeds its total benefit."
【单选题】________ based his own poetical principle on the premise that "all good poetry is the spontaneous overflow of powerful feeling".
【单选题】关于老年期运动系统的生理特点,陈述不正确的是( )
【简答题】(e_________________ )n. 紧急情况,突然事件
【简答题】在保证中,核保必须双人同去。( ) A.对 B.错