15、向化合物中加入 10 毫升硬化剂。

　Put 10ml of hardener to the component.

　Add 10ml of hardener to the compound.

　Add 10ml of adhesive to the compound.

正确答案：B

解析：

解析:注释: hardener 硬化剂; component 部件; compound 复合物,化合物;adhesive 胶粘剂,黏合剂。

208、每个句子最多 20 个单词。

207、There is a change form on the next page, which is also available in electronic format on the STEMG website.

206、The time between clicks must be 10 seconds.

205、 The STEMG has records of all change forms produced and their assessments.

204、不要将不同主题的内容放在同 m 段落中。

203、Pages of permanently bound Handbooks need not be dated.

202、The symbol means all or most of the rules in that section.

201、The protective paint will prevent corrosion for six months.

200、Refer to the table that follows for the applicable torque values.

199、Suggested alternatives are aligned with their related examples.