国规定的永久气体的基准温度为（）℃。A、60； B、0； C、20； D、-40.

根据短文内容，判断正 (A) 误 (B )。

     How do we know the weather? We learn it on the radio and TV every day. Different countries have

different weather. For example, the weather in Australia is different from that in North China, because

the seasons in Australia are opposite. Its summer is from December to February. But in North China,

it's winter at this time. And its winter is in June, July and August. So when it's spring in North China,

it's autumn in Australia. When you visit the country, you'd better choose the best time.

(     ) 1. people can't learn the weather on TV.

( ) 2. The weather in all countries is the same.

( ) 3. It's very hot in February in North China.

( ) 4. The weather in Australia in December is very hot.

(     ) 5. When you go and visit Australia in August from North China,

             you'd better take enough (足够的) warm clothes.　　

从蝌蚪到青蛙，其主要呼吸器官的变化是[ ]

A．内鳃→肺

B．外鳃→内鳃→肺

C．外鳃→肺

D．内鳃→外鳃→肺

读下图，回答问题。（10分）

图1                              图2

(1)图1为某城市郊区农业区位图，计划布局以下农业区：

①粮食产区  ②花卉蔬菜园艺区  ③乳肉家禽畜牧业区  ④果树林区合理的布局是(填代号)

A为________，B为________，C为________，D为________。

布局②的理由是______________________________________________________。

(2)该城市发展到图2时，据图信息分析，城市的发展对农业生产的压力及对策。

压力：____________________________________________________________；

对策：______________________________________________；

在投资项目前期阶段，项目决策管理层管理项目的内容不包括( )。

A．确定项目规划
B．确定项目基本方案
C．确定项目申请报告
D．确定工程设计文件

安全压杠必须有足够的锁紧力，其锁紧机构（）由乘客开启。

A、能；

B、不能；

C、视设备型号而定。