【单选题】The maximum possible weight of an aircraft is determined by______.
A.
international regulations
B.
the number of passengers
C.
the amount of freight room
【单选题】FedEx services have different restrictions on the goods' ______.
A.
maximum weight per piece
B.
maximum length plus girth per piece
C.
maximum length per piece
D.
maximum height per piece
【单选题】On our arrival, we found Tom_____ at the desk with his hand ______ to the distance.
【单选题】—Was Tom nervous before making a speech to the class? —Yes, he was. I noticed his hand_______ .
【简答题】如图,在△ABC中,AB=AC=1,∠A=45°,边长为1的正方形的一个顶点D在边AC上,与△ABC另两边分别交于点E、F,DE∥AB,将正方形平移,使点D保持在AC上(D不与A重合),设AF=x,正方形与△ABC重叠部分的面积为y。 (1)求y与x的函数关系式并写出自变量x的取值范围; (2)x为何值时y的值最大? (3)x在哪个范围取值时y的值随x的增大而减小?
【多选题】根据外汇交易中支付方式来划分,汇率的种类包括
【简答题】如图,在△ABC中,AB=AC=1,∠A=45°,边长为1的正方形的一个顶点D在边AC上,与△ABC另两边分 别交于点E、F,DE ∥ AB,将正方形平移,使点D保持在AC上(D不与A重合),设AF=x,正方形与△ABC重叠部分的面积为y. (1)求y与x的函数关系式并写出自变量x的取值范围; (2)x为何值时y的值最大? (3)x在哪个范围取值时y的值随x的增大而减小?
【简答题】根据外汇交易中支付方式来划分,汇率的种类包括: A.电汇汇率 B.即期汇率 C.信汇汇率 D.票汇汇率 A. B. C. D.
【简答题】如图,在△ABC中,∠ACB=90°AC=BC=6cm,正方形DEFG的边长为2cm,其一边EF在BC所在的直线L上,开始时点F与点C重合,让正方形DEFG沿直线L向右以每秒 1cm的速度作匀速运动,最后点E与点B重合. (1)请直接写出该正方形运动6秒时与△ABC重叠部分面积的大小; (2)设运动时间为x(秒),运动过程中正方形DEFG与△ABC重叠部分的面积为y(cm 2 ). ①在该正方形运...
【单选题】The maximum possible weight of an aircraft is determined by______.
B.
the amount of freight room
C.
the number of passengers
D.
international regulations