叉车车轮的滑动率在()时,轮胎与路面之间有最大的纵向附着系数,而侧向附着系数也较大。
A、15%~20%
B、5%~10%
C、20%~30%
D、10%~15%
参考答案:A
— What's the matter?
— They said I should not be allowed here. They don't allow ______ in the waiting room. [ ]
A. smoking, to smoke
B. to smoke, smoke
C. to smoke, smoking
D. smoking, smoking
情景模拟的主要内容有()
A、公文处理
B、与人谈话
C、无领导小组讨论
D、角色扮演
E、即席发言