The（）(折叠式舱盖) can fold slowly.

A. rolling type hatch cover
B. side-rolling hatch cover
C. folding type hatch cover
D. automatic hatch cover

A. rolling type hatch cover
B. side-rolling hatch cover
C. folding type hatch cover
D. automatic hatch cover

A. automatic hatch cover
B. folding type cover
C. hatch coaming
D. side-rolling type cover