【单选题】什么是骨水泥?是骨骼粉碎加工制成的水泥呢,还是可以制成骨骼的水泥材料?都不是。它是一种用于骨科手术的医用材料,由于它的部分物理性质以及凝固后外观和性状颇像建筑、装修用的白水泥,便有了如此通俗的名称。其实,它的正名是骨粘固剂或骨固着剂。其主要成分是聚甲基丙烯酸甲酯,主要用于人工关节置换手术。关节是人体运动的枢纽,由于创伤或病变,可能变得僵硬、强直、出现疼痛症状,甚至无法活动。因而医生常进行“以旧换新...
A.
骨水泥不是骨骼粉碎加工制成的水泥,也不是制成骨骼的水泥材料,而是一种用于骨科手术的医用配套材料
B.
骨水泥的性质以及外观和形状颇像建筑、装修用的白水泥,所以便有了如此通俗的名称
C.
骨水泥的正名是骨粘固剂或骨固着剂,主要用来固定人工关节,并保持长久不松动
D.
骨水泥主要成分是聚甲基丙烯酸甲酯,主要用于人工关节置换手术
【单选题】I magine the following scene: A young lady ’ s miniskirt was accidentally torn open by a young man.
B.
efore the man saying sorry, the Japanese woman would bow down and said in a tender voice: “ Sorry, it ’ s my fault. It is all the bad quality of my skirt. I am sorry for the trouble I have brought to you. ” An American woman would give him a name-card and say “ This is my layer ’ s phone number. He will talk with you about sexual harassment. See you in the court. ” A British girl would cover the torn part of the skirt with a newspaper in hand and shyly said “ Sir, will you call a taxi to take me home? It is not very far away. ” And what do you think the
C.
hinese women would do? W hat can you learn form the humorous story?
【简答题】Imagine the following scene: A young lady’s miniskirt was accidentally torn open by a young man. Before the man saying sorry, the Japanese woman would bow down and said in a tender voice: “Sorry, it’s...
【单选题】This would cover my absence from the base.
【单选题】This would cover my absence from the base.
【单选题】在马斯洛的需求层次理论中,其早期版本将人的需求划分为 层次,其中最高层次是。
【简答题】常用的硬质装修材料有________、________、________、________、________等。
【判断题】关系 R 和关系 S 的差记做 R-S ,表示属于 R 但不属于 S 的元组。
【多选题】被审计单位在财务方面可能导致对持续经营假设产生重大疑虑的事项是( )。
C.
投资者未履行协议、合同、章程规定的义务,并有可能造成重大不利影响
【多选题】被审计单位财务方面可能导致对持续经营假设产生重大疑虑的事项或情况有( )
C.
定期借款即将到期,但预期不能展期或偿还,或过度依赖短期借款为长期资产筹资