TN—C—S系统中的工作接零和保护接零是（）。 A.合用的 B.部分分开部分合用 C

患者女，56岁，右侧耳鸣1年，听力下降3个月。

临床拟诊为（）

A.CPA区脑膜瘤

B.CPA区听神经鞘瘤

C.三叉神经鞘瘤

D.CPA区皮样囊肿

E.CPA区表皮样囊肿

F.CPA区蛛网膜囊肿

G.面神经鞘瘤

Rising levels of carbon dioxide in the atmosphere are a major cause of climate change, and now a new study has confirmed that atmosphere CO₂ is also affecting the ocean chemistry and potentially harming sea life.

Montana State University scientist Robert Dore has been researching the water in the Pacific Ocean for almost two decades. “We’ve been going to the same spot in the Pacific Ocean, and we try and characterize long-term change in the open ocean environment. And one of the key things that we measure is CO₂ levels. And we’ve been able to record this increasing quantity of atmosphere CO₂ into the ocean.”

Scientists expected that as atmosphere CO₂ increased, more and more of the carbon dioxide would be absorbed into the ocean, affecting the chemical balance of the sea water, with a potentially harmful impact on shellfish and coral in particular.

“As carbon dioxide dissolves in the water or seawater in this case, it forms a weak acid, carbonic acid,” Dore explains. “And therefore, as the concentration of CO₂ in the atmosphere goes up and that exchanges with the surface seawater, it drives the pH down, and makes it more acidic.”

The seawater samples Dore and his colleagues have analyzed confirm what the theory predicts.

The effect was particular striking at about 250 meters down, and again at 500 meters. Dore and his colleagues came up with two possible explanations. It could be that surface water picked up CO₂ and then moved to those depths. Or there could be a biological explanation.

“It’s important to realize that the oceans are really becoming acidic. And it can have negative impacts on a whole variety of sea life from fish to coral. It’s potentially catastrophic.”

小题1:What can be the best title of the passage?

A．Scientist Researching Seawater

B．Sea Life Facing Danger

C．Oceans Becoming More Acidic

D．Climate Change Affecting Seawater小题2:With the increase of atmospheric CO₂, _______.

A．more corals will appear in the sea

B．the chemical balance of the seawater is affected

C．the surface water is becoming warmer

D．the pH of the ocean out here has been increasing小题3:Which of the following shows the process of the impact of atmospheric CO2 on sea life?

a. Sea life is endangered.

b. CO₂ goes into the surface water.

c. The ocean chemistry is affected.

d. CO₂ decreases the pH and makes the seawater more acidic.

e. CO₂ levels in the atmosphere go up.

A．a→b→c→d→e

B．e→b→c→d→a

C．a→e→b→c→d

D．e→d→c→b→a小题4:Scientist Robert Dore came to the conclusion based on_______.

A．the expectation of other scientists

B．some former theory

C．his research and analysis

D．a major cause of climate change

下面那一种情况可以称为温和的通货膨胀（　　）

A．通货膨胀率在10%以上，并且有加剧的趋势

B．通货膨胀率以每年5%的速度增长

C．在数年之内，通货膨胀率一直保持在2%一3%水平

D．通货膨胀率每月都在50%以上

你遭遇困难迫切需要寻求别人帮助时，你最需掌握上述哪一种生活技能（）

A.人际关系能力

B.创造性思维能力

C.缓解压力的能力

D.同理能力

E.有效交流能力

C产品由三道工序完成，原材料在开始时一次投入，其工时定额为：第一道工序列20小时，第二道工序30小时，第三道工序30小时，各工序内均按50%的完工程度计算。月末在产品数量为第一道工序100件，第二道工序200件，第三道工序200件，该月完工产品1000件。月初和本月发生的产品费用合计为：直接材料15000元，直接人工8000元，制造费用10000元，采用约当产量法并按成本项目计算以下各项。 根据上述资料，回答问题：

月末在产品负担的材料费用及人工费用为（）元。

A.3118.81、1663.37

B.5000、1663.37

C.5000、2666.67

D.3118.81、666.67