A.船長(zhǎng)、大副、輪機(jī)長(zhǎng)、二管輪屬于管理級(jí)
B.船長(zhǎng)、大副、輪機(jī)長(zhǎng)、大管輪屬于管理級(jí)
C.船長(zhǎng)、大副、大管輪、二管輪屬于管理級(jí)
D.船長(zhǎng)、二副、輪機(jī)長(zhǎng)、大管輪屬于管理級(jí)

A. They work four hours and have four hours for rest.
B. They work eight hours and have four hours for rest.
C. They work four hours and have eight hours for rest.
D. They work eight hours and have eight hours for rest.