珍珠母的功效是
A. 平肝潜阳
B. 收敛固涩
C. 两者均是
D. 两者均非
牡蛎的功效是
A. 平肝潜阳
B. 收敛固涩
C. 两者均是
D. 两者均非
全蝎的功效是
A. 息风止痉
B. 通络止痛
C. 两者均是
D. 两者均非
A company positioned in the "middle" market introduces a lower-priced product line. What type of line-stretching is this?
A. home stretch
B. up-market stretch
C. down-market stretch
D. maintenance stretch
E. two-way stretch
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