Very good test, 300 packages, the main questions of the professional course, you must not fill in, you can give a certain score according to the answer area, the tutor must not apply for Cherish Wu who is engaged in nano-materials, but he is an old fox, don't apply for Shanhai. He is from a factory and has no scientific research ability. He knows what furnace heat treatment looks like. Like migrant workers, Fu Jijiang is engaged in nano-materials, and he is not very good-looking. Ask me if you don't understand, QQ779 1 16550.