稳定性是性格的主要特征。

不能通过血脑屏障的药物是（）

A.恩他卡朋

B.托卡朋

C.左旋多巴

D.溴隐亭

E.苯海索

食用油脂在烹调中的作用，下面哪一项描述不正确（）

A、有良好的口味和色泽。

B、能加快烹调的速度，缩短食物的成熟时间，使原料保持鲜嫩。

C、高温加热可使油脂中的维A、、E和胡萝卜素等遭受破坏。

D、高温可缩短烹调时间，进而可减少维生素的损失，因此应高油温烹调加工蔬菜。

Some people don't believe that driving more slowly can save lives．But the truth is that driving more slowly can help a person to avoid serious accidents．

The above chart（表格） shows the distance that it takes to stop a car at a given speed．The distance is measured in feet．The shaded area（阴影部分） shows the driver's thinking distance．That's the distance it takes for the driver to react to a danger that he sees．The white area shows the car's braking distance．That's the distance it takes for the car to stop once the brakes（闸、刹车） are used．The number at the top of each bar shows the total number of feet that it takes to stop the car

小题1:According to the chart, what is the total number of feet needed to stop a car that is traveling at 50 miles per hour?

A．55．

B．73．

C．128．

D．183．小题2:What is the braking distance for a car that is travelling at 60 miles per hour?

A．66 feet．

B．119 feet．

C．185 feet．

D．251 feet．小题3:Which of the following statements about braking and speed is true?

A．The braking distance is what it takes for the driver to react to a danger that he sees．

B．The speed of a car has a direct effect on the distance needed to stop the car．

C．The braking distance increases only when a driver drives faster than 50 miles per hour.

D．Driving slowly can help a person to avoid all accidents

氯瓶在使用过程中，出现不易汽化现象时，可采用（）方法

A、摇晃氯瓶

B、用水冲洗钢瓶

C、使用蒸气加热钢瓶

D、提高加氯间室温

目标管理又称为成果管理，俗称责任制，它是在泰勒的（）的基础上，形成的一套管理制度。

A、面对挫折

B、科学管理

C、行为科学管理

D、超越困难