适用于玻切钳夹的异物有()
A．视网膜内非磁性异物
B．视网膜内磁性异物
C．玻璃体内非磁性异物
D．玻璃体内磁性异物
E．以上均适合
参考答案：E
心肌梗死的缺血型改变应该是
A．T波升支与降支对称
B．T波由直立变为倒置
C．T波顶端尖耸
D．S-T段抬高
E．可出现病理性Q波或QS波
During the summer vacation, several provinces have ________distance learning to help their teachers to
improve their teaching skills and update their professional knowledge.[ ]
A. attended
B. adopted
C. adapted
D. admitted
