Analyze the weather system as shown in the figure, and answer the question 10 ~ 1 1 accordingly. In the pressure field as shown in the figure, the weather system as shown in the figure is easy to appe

Analyze the weather system as shown in the figure, and answer the question 10 ~ 1 1 accordingly. In the pressure field as shown in the figure, the weather system as shown in the figure is easy to appear () A.B. Looking at the map shows that the weather system is a cold front.

A, as shown in the figure near the ridge line of high pressure (northern hemisphere), the airflow diverges, and there will be no front, which does not meet the meaning of the question;

B, according to the deflection direction shown by the arrow, it shows the west side of the cyclone formed by the low pressure in the northern hemisphere, and according to the moving direction of the airflow, it is a cold front, so it conforms to the meaning of the question;

C, which shows the eastern part of the cyclone formed by the low pressure in the southern hemisphere, is judged as a warm front according to the airflow direction, which does not meet the meaning of the question;

D, the cyclone formed by the low pressure in the northern hemisphere is a warm front in the east, which does not meet the meaning of the question.

So the answer is: B.