【判断题】每半年付息一次的债券利息是一种年金的形式。
【判断题】Venture capitalist can be both professional investors and non-professional investors.
【单选题】Part A Directions: You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer ― A, B, C or D, and mark it in your test booklet. You...
A.
She figured the problem out in her head.
B.
She was ahead of the other students until today.
C.
She didn't think careful about the problem.
D.
She used her calculator to do the problem.
【多选题】有关'有包膜病毒'的叙述,哪一项是错误的:
【简答题】作业1:求解一元二次方程 要求:能从键盘输入3组任意不同a、b、c的值,判断有无实数根,并计算器实数其根(a≠0)。 请给出运行结果截图。
【多选题】根据点的两个投影求出第三投影,下列哪些说法是正确的?
C.
不作 45 度斜线,根据点的任意两个投影也可以求出第三投影;
D.
45 度斜线的原因是因为俯视图和左视图中点的投影与 OX 轴的距离是相等的;