2.  >>  国家开放大学 / 工程力学（汽车）
 国家开放大学 / 工程力学（汽车）
正确率：100%

下述关于力的说法正确的是：
对任意物体而言，力的全部要素为力的大小、力的作用线。

对任意刚体而言，力的全部要素为力的大小、力的作用点。

对任意物体而言，力的全部要素为力的大小、力的方向和力的作用线。

对任意刚体而言，力的全部要素为力的大小、力的方向和力的作用线。
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工程力学（汽车）
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The writer of this article ______. A. suggests that an applicant use an immigrant agent even when an application is easy B. disapproves of using an immigrant agent if application is easy C. thinks that third parties should not charge a fee for their services D. believes that all immigration agents are unscrupulous 4. Immigration professionals should ______. A. suggest their clients supply fraudulent documents B. delay the clients’ application delivery C. talk an unqualified candidate into buying their services D. send in the correct documents 5. In the case of a most unfavorable application, a highly experienced immigration professional ______. A. encourages the client’s application B. highlights the applicant’s qualities and helps persuade visa officers that the applicant is Worthy of selection and meets all the selection criteria C. does not charge a fee for their service D. discourages the client’s application 6. 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