行政法是调整行政关系的法律规范的总称。行政法的核心是（）。

A．Triangle = -4.2, Square = 11.5, Diamond = -1.8, Circle = 6.6

B．Triangle = -3.2, Square = 10.5, Diamond = -0.8, Circle = 5.6

C．Triangle = -5.2, Square = 12.5, Diamond = -2.8, Circle = 7.6

D．Triangle = -6.2, Square = 12.5, Diamond = -3.8, Circle = 8.6

A vessel showing a rigid replica of the International Code flag "A" is engaged in ______.

A.diving operations

B.dredging

C.fishing

D.mineclearance operations

A、a red

B、red

C、orange

D、an orange

A、a red

B、red

C、orange

D、an orange

What is the area of a circle whose radius is the diagonal of a square whose area is 4？

A．2π

B．2π

C．4π

D．8π

E．16π

A、block

B、none

C、disc

D、circle

E、square

F、decimal

G、lower-roman

H、upper-roman

I、lower-alpha

J、upper-alpha

K、text-align

L、width

A．s+=i*flag ，flag=-flag

B．flag=-flag ，s+=i*flag

C．s+=i*flag ，flag++

D．s+=i ，flag=-flag