a______ v.to leave a person, a thing or place, esp.because it is impossible to stay with the person or stay at the place

根据定义选单词：v.to hold sth. or sb. gently in your hands or arms （字母c开头）

v.to get involved in and try to influence a situation that does not concern you, in a way that annoys other people A: lantern B: interaction C: kneel D: interfere

v.to throw sb. /sth. with force; n. an area of ground specially prepared and marked for playing a sports game A: pension B: pitch C: preface D: pint

n. a heavy metal object that is attached to a rope or chain and dropped over the side of a ship or boat to keep it in one place; v.to fix sth firmly in position so that it cannot move A: beggar B: behavior C: barber D: anchor

图示四种结构，各杆EA相同。在集中力F作用下结构的应变能分别用Vε1、Vε2、Vε3、Vε4表示。 下列结论中正确的是（） A: V〉V〉V〉V； B: V〈V〈V〈V； C: V〉V，V〉V，V〉； D: V〈V，V〈V，V〈。

请依据图建立可达矩阵，并用简化方法建立其递阶结构模型。 V V A A A P1 V V A V P2 V V A P3 V V (A) A P4 V (V) V P5 V V A P6 V (V) P7 V P8 P9

工作在放大电路中的NPN型晶体管，必须满足（）。 A: V>V>V B: V>V>V C: V>V>V D: V>V>V

对急性下壁心肌梗死患者应常规加做的导联是（）。 A: aVL、V～V B: V～V、V～V C: V～V、V～V D: V～V E: V～V

已知一有向图的邻接表存储结构如下，则根据有向图的深度优先遍历算法，从顶点V1出发，不能得到的顶点序列是（）。 A: V，V，V，V，V B: V，V，V，V，V C: V，V，V，V，V D: V，V，V，V，V