拉压杆的变形大小与材料无关

材料力学研究的变形都是微小变形，变形远小于构件的宏观尺寸

材料力学研究的变形都是弹性变形

拉力会引起伸长变形

物体发生形变，一定受到力的作用

物体发生的形变只有弹性形变

用力压桌子，桌子是坚硬物体，不会发生形变

橡皮泥受到挤压后变形，它的弹性很好

心房颤动

心室颤动

房性期前收缩

房室传导阻滞

室性期前收缩及室性心动过速

纠正心源性休克

改善心肌缺血

减少心律失常

防止发生栓塞

增强心肌收缩力

识别用于保护资产的责任义务和规章制度

识别资产以及保护资产所使用的技术控制措施

识别资产、脆弱性并计算潜在的风险

识别同责任义务有直接关系的威胁

正确

错误

The intron splicing takes place within a large protein complex called a spliceosome, and these introns, the spliceosomal introns, are not assigned a group number. A spliceosome is made up of multiple specialized RNA-protein complexes called small nuclear ribonucleoproteins (snRNPs).

Each snRNP contains one of a class of eukaryotic RNAs, 100 to 200 nucleotides long, known as small nuclear RNAs (snRNAs). Five snRNAs (U1, U2, U4, U5, U6) involved in splicing reactions are generally found in abundance in eukaryotic nuclei.

In yeast, the various snRNPs include about 100 different proteins, most of which have close homologs in all other eukaryotes. In humans, these conserved protein components are augmented by more than 200 additional proteins.

Spliceosomes are thus among the most complex macromolecular machines in any eukaryotic cell. The RNA components of a spliceosome are the catalysts of the various splicing steps. The overall complex can be considered a highly flexible nucleoprotein chaperone that can adapt to the great diversity in size and sequence of nuclear mRNAs.

识别用于保护资产的责任义务和规章制度

识别资产以及保护资产所使用的技术控制措施

识别资产、脆落性并计算潜在的风险

识别同责任义务有直接关系的威胁