接力器关闭时间整定的目的是满足()的要求。
(A)正常停机;
(B)事故停机;
(C)调保计算;
(D)机组不飞逸。
参考答案:C
饮片切面显车轮纹的药材为()
B.大血藤
C.莪术
D.麦冬
E.鸡血藤
The syllabus used in the Direct Method is arranged semantically according to ______.
A. situations or topics B. textbooks or materialsC. ideas or concepts D. students or learners