能产生淋巴细胞的器官是()
A.肺
B.肾
C.脾
D.心脏
E.脑
参考答案:C
解析:
人体的免疫器官能产生淋巴细胞。脾是人体内最大的淋巴器官,能产生淋巴细胞,提高人体的免疫功能。
Which of the following statements best describes the fund-of-funds (FOF) class of hedge funds A fund of funds:()
A. allows smaller investors to participate in the venture capital market.
B. is open to institutional investors for the purpose of seeking arbitrage situations in hedge fund pricing.
C. allows smaller investors to access the hedge funds market.
密闭空间作业职业危害防护中,空气中氧含量低于( )的可能引起死亡、失去知觉、丧失逃生及自救能力、伤害或引起急性中毒。
A.30%
B.28%
C.22%
D.18%