A:x|kπ+π3≤x≤kπ+π,k∈Z
B:x|2kπ+π3≤x≤2kπ+π,k∈Z
C:x|kπ+π6≤x≤kπ+56π,k∈Z
D:x|2kπ+π6≤x≤2kπ+56π,k∈Z
下列装置工作时发生能量转化的说法中正确的是( )
While ____ the dog, you were careless and it got ____ and was hit by a car.