锚链管上口设有盖，其目的是（）。
A.保证人员安全
B.防止海水进入锚链舱
C.防止杂物进入锚链舱
D.防止海水进入和杂物锚链舱
参考答案：B
-Do you know the boy is sitting next to Peter?
-Yes,He is Peter’s friend,They are celebrating his birthday.
A．/;nineth
B．that, nineth
C．who,ninth
D．who,the ninth
追索金额为______。
