井下动力钻具是采用()钻具的钻井。
A.满眼
B.钟摆
C.井下动力
D.转盘动力
参考答案:C
Some people are born to have a very good memory whereas many other people are born to have a memory like a ______.
A. sleeve B. sieve C. button D. basket
一个人具有直率、热情、动作迅速、情绪体验强烈、具有外倾性等心理特征。我们判断这个人的气质类型倾向于()。
A.多血质;
B.抑郁质;
C.胆汁质;
D.黏液质。