高速客船专用码头上下旅客设施应该畅通,牢固,符合安全条件,夜间应有足够的照明,冬季应采取防冻防滑等安全保护措施。
参考答案:对
Every possible means ________, but the teacher as well as the students ________ found a solution to the problem yet.
A.has been tried; hasn’t
B.has tried; haven’t
C.have tried; haven’t
D.have been tried; hasn’t
职工伤亡事故发生后,应采取哪些紧急处理措施