就一个对称问题进行有限元分析，若采用对称面切分后的一半模型进行建模分析，则在对称面上需要对________施加零值。As for a symmetric problem, if a segmentation of the plane of symmetry is carried out and then we do a half model modeling analysis, on the symmetric plane we should add a zero value term for the ______. A: 反对称位移anti-symmetric displacement B: 对称位移symmetric displacement C: 对称应力symmetric stress

Which of the following statement is false? A: If[img=77x23]1803b6aa763b00a.png[/img], where[img=77x23]1803b6aa7e8aab9.png[/img] and D is a diagonal matrix, then B is a symmetric matrix. B: An orthogonal matrix is orthogonally diagonalizable. C: An[img=44x19]1803b6aa8680eb5.png[/img]symmetric matrix has n real eigenvalues. D: An[img=44x19]1803b6aa8680eb5.png[/img]symmetric matrix hasnlinearly independent eigenvectors.

The abbreviation USB stands for Universal ( ) Bus. A: Syntactic B: Serial C: Sequential D: Symmetric

某对称水闸宽度方向水平尺寸基准的位置是什么?What is ... a symmetric sluice？

Symmetric key encryption is also known as: A: public key encryption. B: secret key encryption. C: PGP. D: PKI.

The abbreviation USB stands for Universal ( ) Bus.[br][/br]· A: Syntactic<br>· B: Serial<br>· C: Sequential<br>· D: Symmetric

It is expected that thebilateraltrade volume will hit a new high of $ 30 billion this year. A: longitudinal B: two sides C: delayed D: symmetric

以下缝合装置中，哪种尾部具有可调节环？（） A: QUILL B: V-LOC C: Symmetric D: Spiral

以下缝合装置中，采用压制成刺工艺的是（）。 A: QUILL B: V-LOC C: Symmetric D: Spiral

Which of the following statement concerning about the arithmetic mean is FALSE（） A: It is less than or equal to the geometric mean. B: It is a commonly used measure of central tendency. C: It is equal to the median and mode in symmetric distributions.