接触网作业车运行中应遵守哪些规定？

The Intergovernmental Panel on Climate Change (IPCC) was set up in 1988 to assess information on climate change and its impact. Its Third Assessment Report predicts global temperature rises by 2100 of between 1.4°C and 5.8°C. Although the issue of the changing climate is very complex and some changes are uncertain, temperature rises are expected to affect countries throughout the world and have a knock-on effect with sea-level rises.Scientists have argued about whether temperature rises are due to human activities or due to natural changes in our environment. The IPCC announced in 2001 that "most of the warming observed over the last 50 years is likely to be attributable to human activities". This was a more forceful statement than in 1996 when the Second Assessment Report stated that there was a "discernible human influence on the climate" which was the first time they had concluded such a link. Many experts believe the faster the climate changes, the greater the risk will be.Key points of the projections for climate change globally include that by the second half of the 21st century, wintertime rainfall in the northern mid to high latitudes and Antarctica will rise, that meanwhile Australia, Central America and southern Africa are likely to see decreases in autumn precipitation, that some land areas in the tropics will see more rainfall, and that there will generally be more hot days over land areas.

According to the author, climate researchers________.

A．are quite sure about why it’s getting hotter and hotter

B．declared that we humans are the cause why it’s getting hotter

C．have discussed the possible causes why it’s hotter

D．have claimed that changes in nature are the roots of hot days

配置STP协议时，为选择交换机的根端口，不需要比较以下 (52) 参数。

A．Root ID

B．Designated Bridge ID

C．Designated Port ID

D．Port Speed

（2011广东株洲，2，3分）计算x2·4x3的结果是（   ）

A．4x3

B．4x4

C．4x5

D．4x6

患者因上运动神经元损伤而出现膀胱功能障碍，下列哪一项不是常用的膀胱控制训练内容（）

A.排尿反射训练

B.括约肌控制训练

C.手法排尿训练

D.水出入管理

E.长期留置尿管

飞机加油单共有几种（）。

A.1种

B.2种

C.3种

D.4种