【简答题】Religiously, most Americans are _______; among them 52% are ______ and 24% ______.
【单选题】如果企业的资金来源全部为权益资金,且没有优先股存在,则企业财务杠杆系数 ( ) 。
【简答题】在△ABC中,已知 ,求角A、B、C的大小.
【单选题】Samuel JohnsonSamuel Johnson (18 September 1709– 13 December 1784), often referred to as Dr Johnson, was an English writer who made lasting contributions to English literatureas a poet, playwright, es...
A.
A Dictionary of the English Language
B.
A Journey to the Western Islands of Scotland
C.
Lives of the Most Eminent English Poets
D.
The Gentleman's Magazine
【简答题】在△ABC中,已知角A、B、C所对的边分别是a、b、c,边c=,且tanA+tanB=tanA·tanB-,又△ABC的面积为S △ ABC =,求a+b的值。(本题满分12分)
【判断题】调节冠脉血流量的最重要的因素是心肌本身的代谢水平, 而神经和激素的调节作用居于次要地位。
【单选题】appraise
A.
(尤指通过恐吓)使丧失思考能力,使丧失正常行为能力,使呆若木鸡
【简答题】作功冲程:当压缩冲程活塞接近上止点时,火花塞产生电火花点燃混合气,并迅速燃烧,此时进、排气门仍然___________(开启或关闭),气缸内气体的温度、压力急剧___________,从而推动已经越过上止点的活塞向___________止点移动,通过连杆使曲轴旋转并输出机械能。
【简答题】在△ABC中,已知内角A,B,C的对边分别为a,b,c,且满足 2 asin(B+ π 4 )=c (I)求角A的大小., (II)若△ABC为锐角三角形,求sinBsinC的取值范围.