【单选题】以下关于单克隆抗体的叙述,不正确的是()
【多选题】下列函数中,是 Riemann 可积函数的有
D.
Dirichlet 函数(在有理数上取值为0,无理数上取值为1)。
【单选题】Jack said he ____ this Sunday morning.
【单选题】以计算机中所记录的形状参数与属性参数来表示图形的一种方法叫做( ),一般把它描述的图形叫做( );而用具有灰度或颜色信息的点阵来表示图形的一种方法是( ),它强调图形由哪些点组成,并具有什么灰度或色彩,一般把它描述的图形叫做( )。
【单选题】Jack said it had been foolish______me to make such a mistake.
【单选题】听力原文:M: Good morning. I'm Jack, Jack Brown. My father asked me to come over and see you about a vacation job. W: Oh, come in, Jack, I haven't seen you for ages. I hear you're at the university now. Q:...
C.
Some money for the university fees.
D.
Some money for the vacation.
【判断题】位图可以表现色彩的变化和颜色的细微过渡,从而产生逼真的效果,但是图片放大就会失真,而矢量图则主要用来描绘有规律的线条组成的图形,难以制作色彩丰富的图像,但是图像放大却不会失真。