牙槽骨水平型吸收的特点是()。
A.是最常见的吸收方式
B.牙槽间隔、唇颊侧或舌侧的嵴顶边缘呈水平吸收
C.牙槽嵴高度有明显降低
D.常形成骨上袋
E.以上均是
参考答案:E
_________in the regulation that you should not tell other people the password of your e-mail account. [ ]
A. What is required
B. What requires
C. It is required
D. It requires
记账凭证的审核主要包括哪四个方面内容。