固定硬母线金具的上压板是铝合金铸成的,如有损坏或遗失可用()代替。
A、铁板;
B、铸铁;
C、铁合金;
D、铝板。
参考答案:D
The 22-year-old girl _____ to stop her car by the side of the road and opened the trunk. No
spare tire. [ ]
A. afforded
B. wanted
C. allowed
D. managed
在花的组成部分中,对于形成果实和种子来讲最重要的结构是
A.雌蕊
B.雄蕊
C.雄蕊,雌蕊
D.花瓣