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【单选题】
某 0.5 级的电压表,值为 100 伏,测 80 伏的电压时绝对误差是。( )
A.
±5
B.
±0.62%
C.
±0.5
D.
±5%
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【单选题】如图,是在同一坐标系内作出的一次函数l 1 、l 2 的图象,设l 1 :y=k 1 x+b 1 ,l 2 :y=k 2 x+b 2 ,则方程组 y= k 1 x+ b 1 y= k 2 x+ b 2 的解是(  )
A.
x=-2 y=2
B.
x=-2 y=3
C.
x=-3 y=3
D.
x=-3 y=4
【单选题】What is exactly the problem that Jack is faced with at the moment?
A.
He is not as successful as Maggie expects.
B.
He fails to make a commitment to himself.
C.
He is not ready to accept the downhill fact.
D.
He is denied the possibility of getting married.
【单选题】如图,直线l 1 :x=1,l 2 :x=2,l 3 :x=3,l 4 :x=4,…,与函数y= 2 x (x>0)的图象分别交于点A 1 、A 2 、A 3 、A 4 、…;与函数y= 5 x (x>0) 的图象分别交于点B 1 、B 2 、B 3 、B 4 、….如果四边形A 1 A 2 B 2 B 1 的面积记为S 1 ,四边形A 2 A 3 B 3 B 2 的面积记为S 2 ,四边形A 3...
A.
19 60
B.
23 88
C.
25 104
D.
63 220
【简答题】SECTION B ENGLISH TO CHINESE Directions: Translate the following text into Chinese. Successful leaders are emotionally and intellectually oriented to the future--not wedded to the past. They have a hu...
【单选题】The installments of new traffic signals on Devonshire Street has been only ______successful in lowering traffic congestion.
A.
permanently
B.
specifically
C.
evenly
D.
moderately
【单选题】Peter Palumbo, chairman of the Arts Council, said the national companies were so successful commercially that when there was a shortfall in ______ there was little more they could do to raise money.
A.
subsidy
B.
commerce
C.
pension
D.
stock
【简答题】设函数y=y(x)由方程ln(x 2 +y)=x 3 y+sinx确定,则 =______.
【简答题】已知函数 f(x)= 1 3 x 3 - x 2 -3x+ 4 3 ,直线l 1 :9x+2y+c=0.若当x∈[-2,2]时,函数y=f(x)的图象恒在直线l的下方,则c的取值范围是______
【单选题】How to Be a Successful Businessperson Have you ever wondered why some people are successful in business and others are not? Here's astory about one successful businessperson. He started out washing di...
A.
sell cars
B.
own a restaurant
C.
become a good cook
D.
be an airplane pilot
【单选题】已知向量 a =(2,4,5), b =(3,x,y)分别是直线l 1 、l 2 的方向向量,若l 1 ∥ l 2 ,则(  )
A.
x=6,y=15
B.
x=3,y= 15 2
C.
x=3,y=15
D.
x=6,y= 15 2
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