Why can businessmen make money in the emerging elder market?
A) Retirees are more generous in spending money.
B) They can employ more gerontologists.
C) The elderly possess an enormous purchasing power.
D) There are more elderly people working than before.
第2题
按舵叶在舵杆前后的分布比例,舵可分为:
A.平衡舵、半平衡舵、襟翼舵
B.不平衡舵、半平衡舵、倒车舵
C.平衡舵、襟翼舵、倒车舵
D.平衡舵、半平衡舵、不平衡舵
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