起重机索具的安全检查包括()。
A、外部检查、使用正确性检查
B、性能试验和外部检查
C、验证检查和性能试验
D、型号、规格检查和使用正确性检查
参考答案:A
The students _______ busily when Miss Brown went to get a book she _______ in the office.
A.had written; left
B.were writing; has left
C.had written; had left
D.were writing; had left
康复评定、康复治疗的基本概念属于()。
A.基础知识
B.相关专业知识
C.临床知识
D.专业知识
E.专业实践能力