皮带传动中包角的大小直接影响传递（）能力。

Look at the plant in the picture. It looks beautiful, right? Can you imagine (想象) it kills?

The Venus flytrap is a kindof meat-eating plant. It grows in very few places, like wetlands near the sea in North Carolina in America.

The Venus flytrap is not a large plant. It grows to be only about a foot tall. The plant has white flowers in the spring, but it is the plant’s leaves that make it so interesting. The ends of the leaves have folding parts with stiff, tiny hairs (带小硬刺的可折叠部分). These are the plant’s “traps (捕捉器)”.

What does the Venus flytrap eat? As you might guess, the Venus flytrap eats flies (苍蝇). It also eats spiders, ants and crickets (蟋蟀). The Venus flytrap makes most of its food with sun, air and water, just like other plants. Living things just give it extra nutrition (额外营养) to grow well in wetlands.

How does this plant trap and eat living things? The Venus flytrap uses a sweet liquid (液体) to attract its food. When a fly lands on one of the plant’s open traps, hairs on the surface make the trap close. And when the trap closes, the fly is dinner!

If you want to have your own Venus flytrap at home, you have to buy the plant from a special place. You can’t take a Venus flytrap from where it grows! There are laws about taking it out of the wild.

小题1:Where does the Venus flytrap grow?

A．In the wetlands.

B．In the desert.

C．In the rocks.

D．In the sea.小题2:About the Venus flytrap, which of the following is true?

A．It is a large plant.

B．It only eats spiders.

C．It has white flowers.

D．It can fly in the sky.小题3:Which is the right order of the following events in Paragraph 5?

a. The trap of the Venus flytrap closes.

b. A fly lands on one of the plant’s open traps.

c. The fly is kept in the trap as the food of the plant.

d. The Venus flytrap uses a sweet liquid to attract its food.

A．d-b-a-c

B．a-b-c-d

C．b-d-a-c

D．d-b-c-a小题4:How can people get a Venus flytrap?

A．They can get it from where it grows.

B．They can buy it from a special place.

C．They can grow it in their gardens.

D．They can buy it in a park.小题5:Why does the Venus flytrap kill?

A．Because it needs extra nutrition.

B．Because it hates flies.

C．Because insects are its main food.

D．Because it kills for fun.

RM80清筛车液压走行驱动系统采用了变量泵--变量马达，容积调速回路，变量泵的额定压力为（）。

A、5Mpa

B、15Mpa

C、35Mpa

D、45Mpa

竖脊肌()

A．是背部强大的屈肌 

B．位于背部的浅层 

C．收缩时使脊柱后伸和仰头 

D．为全身最大的阔肌 

E．仅连于相邻椎骨之间

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问题：

分析经办行有哪些不当之处，该项目是否构成重大风险事项？

选择切削用量的一般原则有哪些？