重要空白凭证管理必须严格执行（）原则
A.证账分管
B.证印分管
C.证押（压）分管
D.无须分管
参考答案：A, B, C
—What do you think of the robots in the future?
—I think they won't _______ do all the work like humans. [ ]
A. can
B. like
C. able to
D. be able to
专家不得少于成员总数的（）。
