银皇万年青“SliverKing”、银后万年青“SliverQueen”是天南星科亮丝草属的()。
A、栽培品种
B、变种
C、种
D、杂交种
参考答案:A
转配尺寸链每个独立尺寸的偏差都影响装配尺寸精度。
— Would you care for a drink?
— No, thanks.I________. [ ]
A. would rather not
B. wouldn't like to
C. would like to
D. prefer to have one