船舶航行目的地为南美、非洲的,不必提供所有人员黄热病预防接种证书。 ( )
参考答案:错
Which of the following is NOT mentioned as civilian users of GPS a. Hikers. b. Bankers. c. Fishermen. d. Internet service providers.
安装滤油器时应按壳体上标明的()安装。