搜题请搜索小程序“爱下问搜题”
问题 单项选择题

开发部门和开发项目的相关人员的开发费用实行总额控制，项目开发时可按照不超过预投标项目年合同总额的（）预算开发费用

A、0.3%

B、0.5%

C、0.7%

D、0.9%

答案

参考答案：B

选择题

下列有关遗传和变异的说法正确的是

①豌豆的高茎基因(D)与矮茎基因(d)所含的密码子不同。②基因分离定律的实质是：在F1产生配子时，等位基因随同源染色体的分离而分离。③基因型为Dd的豌豆在进行减数分裂时，产生的雌雄两种配子的数量比为1：1。 [ ]

A．三种说法都对

B．两种说法对

C．只有一种说法对

D．只有一种说法错

查看答案
填空题

根据首字母填空

1. We can eat meals in the d             hall in our school.

2. There is a bank n              to the hospital.

3. In our school,there is a big l             ,we often read book in it.

4. His father bought(买) a d             for her.it can help her study.

5. Ten and forty is            .

6. There is a football match in the g           .

7. This is a 5-star h            .

8. My mother often takes me to the clear p           ;there are many people play in it.
查看答案