操作风险评估的报告阶段的步骤包括()。
A.提出优化方案
B.整合结果
C.绘制流程图
D.总结改进措施
E.双线报告
参考答案:B, E
A lot of children at the school do not live in the town,but come from the ________ countryside.[ ]
A.surrounded
B.surrounding
C.surroundings
D.surround
股骨干骨折骨牵引的时间,儿童约()
A.3周
B.4~6周
C.6~8周
D.8~10周
E.10~12周