The second sentence in paragraph 3 implies that______.
A. pollution-creating methods of progress are efficient ways to industrialize
B. in order to catch up with industrialized nations, developing countries must utilize pollution-creating methods
C. in order for there to be equity between developed and developing nations, pollution-creating methods should be allowed for the developing nations
D. current technology in non-industrialized countries favor pollution-creating methods
查看答案
只要煤气设备严密不泄漏,按《工业企业煤气安全规程》规定,允许负压操作。()