走线梯经过梁、柱时,就近与梁、柱加固。在走线梯上相邻固定点之间的距离不能大于().
参考答案:2M
A.He was able to talk again.
B.He raced to the nursing home.
C.He could tell red and blue apart.
D.He could not recognize his wife.
感染性食物中毒的特点是()
A.细菌在肠道中繁殖
B.有传染性
C.无传染性
D.可有全身感染表现
E.有流行性