D和d为人体体细胞中一对染色体上的两个基因，如图（一）所示。下列叙述不正确的 是

关于大隐静脉高位结扎、曲张静脉剥脱术后的护理。哪一项是错误的（）

A.抬高患肢

B.卧床1周

C.患肢加压包扎

D.保持敷料清洁

E.术后12天拆线

骨髓检查原始粒细胞>80%，早幼粒细胞>12%，诊断为（）

A.急非淋白血病M1型

B.急非淋白血病M2型

C.急非淋白血病M5型

D.急非淋白血病M4型

E.急非淋白血病M5型

阅读理解。

     Planting trees around poultry (家禽) farms can improve air and water quality - and relations with

neighbors. Research has shown that just three rows of trees near poultry houses can reduce the release

of dust and ammonia (氨). They can also reduce the strong smell of ammonia gas.

     The trees capture dust, ammonia and smells in their leaves. They can also reduce energy use. They

also provide shade from the sun, so they reduce cooling costs in summer. And they act as a windbreak,

so they reduce heating costs in winter. Trees can also improve water quality around farms by removing

pollutions from soil and groundwater.

     Several years ago, people were objecting to the smell of poultry farms on the Delmarva Peninsula in

the eastern United States. Delmarva is where the states of Delaware, Maryland and Virginia come

together. Two thousand farms there can each house an average of seventy-five thousand chickens.

     Traditionally the farms used windows to provide fresh air in the chicken houses. Farmers rarely

planted trees or tall crops around the buildings, so there would be no barrier to the airflow.

     But then in the 60s, farms began to use mechanical ventilation (通风) systems. Instead of windows,

the mechanical systems used tunnel fans to circulate (使…循环) air. The fans directed airflow from the

poultry houses toward the homes of neighbors.

     Researchers began dealing with the problem in 2000. They found that over a period of six years,

planting three rows of trees reduced total dust and ammonia by more than half. And they found that

smells were reduced by 18%.

     Farmers may think trees will take too long to grow and be effective. But some trees can grow quickly. At least one-third of the Delmarva farms have planted trees, technically known as vegetative

environmental buffers. The idea offers a way to cut pollution, save money and energy, and make the

neighbors happy.

1. How did the mechanical ventilation system work?

_____________________________________________________

2. The number of chickens raised on the poultry farms in Delmarva is up to ____________________.

3. The benefits of planting trees around poultry farms are _________________.

4. What is the main topic of the passage?

_____________________________________________________

下列有关审判委员会的说法中，不正确的是：

A．独任审判的案件也可能提交审判委员会讨论决定
B．审判委员会的决定，合议庭必须执行
C．案件提交审判委员会讨论之前，需经院长同意
D．因为审判委员会不直接参与庭审，所以审判委员会的成员不存在回避问题

涡轮流量计应（）较大的磁场干扰

A、避免

B、有抗扰能力

C、无反应

D、衰减