下列哪项不是单核一吞噬细胞的功能（）.
A.分泌白细胞介素
B.分泌抗体
C.递呈抗原
D.吞噬异物
参考答案：B
—I had a great time in the summer holidays.We went scuba－diving in Hawaii.
—Wow！________
A．I'm going to Hawaii，too.
B．How generous you are!
C．That sounds really cool!
D．Enjoy yourself!
依据《海船法定建造检验技术规程》，对推进器螺距和状态的指示器应做哪些检查？
