|
190415
|
x,y>0,$$\sqrt{x}$$-$$\sqrt{y}$$=?
1：$$\sqrt{x}$$-$$\sqrt{y}$$=8$$\sqrt{xy}$$
2：$$x^{2}$$-$$y^{2}$$=2xy
|
|
190321 还原机经选题: 数论&代数
|
n is a positive integer. What is the reminder of when divided by 12?
1: n is even.
2: n is a multiple of 3.
|
|
190321
|
$$2^{x+y}*2^{-(x-y)}$$ = ?
1:x=2
2:y=4
|
|
190321
|
ABCD is a parallelogram. BF=2. AE=？
1：∠ABE=10°；∠CBF=30°
2：∠ABC=40°；∠BAD=140°
|
|
190321
|
X and Y are two discrete primes. X=?, Y=?
1：X-Y=5
2：X+Y=9
|
|
190124 还原机经选题: 文字题&几何
|
The shop sold two shirts and one belt at a discount. What's the average discount?
1: Each shirt was 20% off.
2: The belt was 10% off.
|
|
190124
|
The positive integer p is less than 50. When p is divided by 7, the remainder is 1. p=?
1: When p is divided by 9, the remainder is 7.
2: When p is divided by 4, the remainder is 3.
|
|
190124 还原机经选题: 文字题&几何
|
The x-intercept and y-intercept of line l are $$x_c$$ and $$y_c$$, respectively. What is the slope of line ?
1：$$x_c$$$$y_c$$>0
2：(1,1) is in the line .
|
|
190124 还原机经选题: 文字题&几何
|
Two circles are drawn with the two long sides of the rectangle ABCD as the diameter. The centers of the circles are E and F. EF intersects two circles at G and H, respectively. What is the circumference of the rectangle ABCD?
1:AE=9
2:EG=GH
|
|
190124 还原机经选题: 数论&代数
|
Is 12500000 a factor of integer n?
1: n can be divided by $$5^{8}$$.
2: n can be divided by $$20^{5}$$.
|
|
190321
|
xy>0,x/y +y/x >2?
1.$$x \neq y$$
2.x=1.1y
|
|
190321
|
[x] represents the integer that is not larger than x. Is [2d] equal to zero？
1：[d]=0
2：[3d]=0
|
|
190321
|
The set S consists of n consecutive integers. The minimum in S is 3. n =?
1: The mean is 6.
2: The range is equal to the mean.
|
|
190321
|
$$y=a(x-h)^2-k.$$a=?
1: The functional image goes through (-3,0) and (1,0).
2: The functional image goes through (-1,4) and $$y \leq 4$$.
|
|
190321
|
There are four numbers in a set S. The median and the average are both 6. What is the range of these numbers?
1: The smallest number is 3.
2: The largest number is 6 larger than the smallest one.
|
|
190310
|
∠ABM=45°, EF//MN. Quadrilateral ABCD is rectangular. AB=?
1:AE=8
2:BF=25
|
|
190310
|
The bottom surface of the inverted conical vessel is parallel to the horizontal plane. The height of the cone is twice of the radius of the bottom. The container is partially filled with water. There is a small hole at the tip of the conical container. The speed of water leakage is 2cm^3/min. How long does it take for the water in the container to run out?
1: The water surface area is 9 π cm2
2: The distance between the water surface and the bottom of the container is 4 cm
|
|
190310
|
What is the unit digit number of ?
1: k can be divided by 10.
2: k can be divided by 4.
|
|
190310
|
$$ax^2+bx+c=0$$ Does the equation have at least one solution?
1:a > 0
2:c < 0
|
|
190310
|
The relationship between a store's profit y and sales x is
What's the sales volume of this week?
1: This week's sales were three more than that of the last week.
2: This week's profit was $30 more than that of the last week.
|