Passage 1

Which of the following techniques used to compensate the face blindness is not mentioned in the text a. To remember people’s face. b. To remember people’s hairstyle. c. To remember people’s way of walking. d. To remember people’s dressing style.

容易自燃的煤不宜长期堆存，必须堆存时，应有防止（），并经常检查煤堆内的温度。当温度升高到（）以上时，应查明原因并立即采取措施。