下列植物的花是两性花的是( ) A.黄瓜花 B.蓖麻 C.柳树 D.水稻

题型:选择题

问题:

下列植物的花是两性花的是(    )

A.黄瓜花

B.蓖麻

C.柳树

D.水稻

考点:传粉和受精开花与花的结构果实和种子的形成
题型:选择题

题44~49:
某房屋墙下条形基础底面宽度1.2m,基础埋置深度d=1.3m,基础埋深范围内土的重度γm=118.0kN/m3,持力层为粉土,重度为γ=17.0kN/m3,对粉土取6组试样,进行直剪实验,已求得每组试样的内摩擦角φi和ci具体数值见题表:
题44-49表

组别123456
φi(度)27.4726.6126.5626.7927.1127.34
ci(N/mm2)44.045.848.049.7544.0048.75

如果φc=0.958,则与黏聚力标准值接近的为( )。

A.41.9N/mm2
B.44.76N/mm2
C.46.96N/mm2
D.52.33N/mm2

题型:选择题

Research studies show that there are some fundamental (1) between men and women in their attitudes to (2) matters. Women are far more likely to save for their children’s (3) and to save up to buy a (4) . Men tend to save for a (5) , and for their (6) . But in fact the need for women to save for their old age is far (7) than for men. Throughout the world, women are likely to live many years (8) than men. Furthermore it is the (9) women who will most often have to look after the children and thus they need more (10) to look after not just themselves but others. Women today need to look ahead, think ahead, not wait until they’re under (11) .
A number of (12) have been set up to help them do this. Some educational institutions offer night (13) in Money (14) . They can be given (15) on different ways of saving. It is usually advised that at least (16) of a person’s savings should be in low-risk investments but for the rest, (17) advisors often advise taking some (18) risks. Initiatives such as this can give women the economic (19) and knowledge they need for a comfortable, (20) retirement.

题型:选择题

当探杆随着筛板上下跳动而且感觉比较明显时,这表明筛板()

A、紧实

B、松动

C、掉落

D、安装合适

题型:选择题

新核心系统内部账户是通过()进行开设的。

A.会计分录

B.科目代码

C.产品代码

D.产品子类

题型:选择题

电压无功优化的三个目的是()、()、()。

更多题库