A portable, automated telephone line test device includes a test module which applies test signals to a telephone line to be tested and detects electrical characteristics of the telephone line, and a user interface module. In the memory cell array, a plurality of memory cells are arranged in a matrix of rows and columns. Therefore, this protein can be prepared into the drug for prevention and treatment of IBD. As the dosing needle no longer has to enter the pixel, pixels can be dosed with oil from a relatively large injection needle. The present invention can mitigate the image crosstalk problem exiting in the conventional 3D display. Such an antenna array may be used in communications and radars.