根据质量检验的作用扣目的.对打叶复烤的质量检验确定()、连续性、准确性、客现性原则
A.系统性、经常性
B.一致性
C.经常性
D.系统性
参考答案:A
What are they doing?[ ]
A. They are taking pictures.
B. They took pictures.
C. We are taking pictures.
低温时易发生的心律失常是,其原因是()、()。