In css, to center box vertically with the center of the page, please fill in the following code space..box{ position: ________ __ ; left:50%; top:50%; margin-left: ________ ___; margin-top: __________ _ ; width: 300px; height: 200px; border:2px solid #ccc; }

在JavaScript开发中，varbox=10+“1”；document.write（“box=”+box）输出是？（） A: box=101 B: box=box C: box=10 D: box=NAN

In css, to center the box vertically with the center of the page, fill in the blank space (). .box{ position: ; top:0; bottom:0; left:0; right:0; margin: ; width: 300px; height: 200px; border:2px solid #ccc; } A: absolute 50% B: absolute auto C: relative<br/>50% D: relative auto

在jquery中,选择id为box的元素,以下操作正确的是: A: $(".box") B: $("#box") C: $("box") D: $(#box)

Core box≥die box

There is ____ box in the room. _____ box is heavy.

In the flow chart, it is ( ) that represents the judgment box. A: Rectangular box B: Diamond box C: Parallelogram box D: Oval box

真核启动子包括TATA box、CAAT box和GC box等结构。

There are millions of stars in______ A: space B: a space C: the space

Box b1 = new Box();Box b2 = b1;之后b1和b2指向同一个对象。