题目内容

营养液原料化合物的要求主要有

A. 纯度
B. 溶解度
C. 元素含量
D. 价格

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以下哪些单位用于表示营养液的浓度？

A. mg/L
B. mol/L
C. EC
D. Pa

Choose the proper word from the KEY WORDS to fill in the blank in each of the following sentences, making changes when necessary.1. The captain did his best to ___ a sense of unity among the new members.2.We encourage all members to _ for the highest standards.3.Each step has some related _ tools.4.They also helped him through his recovery and _ after the surgery.5.She went to the bank to draw her ___.

在页面中，有2个标题h2、h3和3个段落，它们的字号和颜色都为30px和红色，可以进行如下样式设置：h2,h3,p{font-size:30px; color:red;}

A. 对
B. 错

与之间相当于一个容器，可以容纳段落、标题、表格、图像等各种网页元素。也就是说，大多数HTML标记都可以嵌套在标记中，中还可以嵌套多层。

A. 对
B. 错