由(1)得:x≥12;
由(2)得:x<34.
故此不等式组的解为12≤x<36.
— All the lights have gone out in the office building.
— Yes, they have ______ electricity. [ ]
A. cut off
B. cut up
C. cut in
D. cut down
符合脊柱结核MR信号表现的是()
A.T1WI和T2WI均为低信号
B.T1WI为低信号,T2WI为高信号
C.T1WI和T2WI均为高信号
D.T1WI为高信号,T2WI为低信号
E.T1WI和压脂像均为低信号