Military Dispersion circle diameter is M0A

MOA is angular minutes, is a unit of shooting accuracy, 1MOA accuracy in 100m distance of the maximum dispersion of the shooting bullet does not exceed 3cm diameter of the circle, and 50m distance does not exceed, 1moa sniper rifle in 300m distance error does not exceed 6cm, so the distance implosion of a person's head is as easy as a hand, in 1000m distance spread should also be within 30cm. The most accurate sniper rifle in the world is the TPG-1 sniper rifle with minimal dispersion, followed by the Barrett XM107 (M82A3), PSG-1, M24 SWS ,......There are many more in the middle), like other sniper rifles, the accuracy is 2moa, domestic sniper rifles can't reach it, M21, SVD are all 2moa. And the Chinese knock-off Type 85 "sniper rifle", scattered at a distance of 1000m.

Basically, it can't hit people, and the 1000m dispersion of the Type 88 sniper rifle is too large, up to 100m, and the distance of 100m is only 2 arcs. In short, China's new large-caliber sniper rifle, with its best results, is not as good as the standard M24 sniper rifle of the US military, and it is even more different from Barrett.

Aim a little right, hit a certain number of bullets, the bullet holes are contained in a circle, this circle is called a scatter circle, the smaller the diameter, the higher the accuracy;

moa-minute of angle, translated into Chinese, means 1 of 60 parts of 1 degree within 360 degrees

Assuming that the length of the radius of a circle is 50 meters, then its diameter is 100 meters ( 50 x 2 ), and the formula for calculating the size of the MOA angle is as follows:

100 x ) x ( 1 moa / 21600 )

314 x m) cm means that the angle of 1 moa at a distance of 50 meters is equivalent to cm, which means that after a sniper rifle with an accuracy of 1 moa is zeroed, there will be a random error of cm at a target of 50 meters.

Neither gun was put into service.

In the end, the PLA adopted the QBU10

Here's the information.

By the way. China does not use MOA as a calculation method.

This method of calculation was adopted by the US military.

China's use of secret position calculations is different from that of the U.S. military.

Categorical Discussion:

When a2=1, i.e., a= 1, the solution set of the original inequality is: x≠1, and when -11, when a>1 or a<-1, the solution set of the original inequality is: x>a 2, or x<1.

If a 2 = 1, the solution set of the original formula is: (-1) (1,+

If a 2>1, the original solution set is: (a 2, + 1).

If a 2<1, the original solution set is: (1, + a 2).

From the title, 4a2+(a-1)2-2(a-1)-4 0 is 5a2-4a-1 0

Solution: ?1

5 A 1, so choose D

The intersection of the straight line y= x 2-1 and the circle x +y -2y-4=0 x +y -2y-4=0 is reduced to x +(y-1) =5 is the circle is (0,1) and the radius is the root number 5 of the circle (2a,a-1) can be understood as x=2a y=a-1 is converted to y= x 2-1 calculation. The intersection of the straight line y= x 2-1 and the circle x +y -2y-4=0 gives x=-2 5 and 2 so -2 5<2a<2 gets -1 5

a=[f-(m0+m)g]/(m0+m)

t-mg=ma

The first town of the town is simply proven, the word is not easy to type, sorry can not be completely answered, if you want to cover the words I can rent a rough handwritten answer.