2.There’s no doubt about her suitability for the job.
毫无疑问, 她适合这项工作。
3.There's a question mark about her suitability for the job.
她是否适应这个工作是个问号。
4.Shell carbon black can be used to modify furane resin for significantly enhancing its electrostatic resistance and impact resistance,so that it is of greater suitability value.