计算机网络由资源子网和______组成。

读短文完成下列两项任务。

     Here are two cars. They may some day (1)_____ the place of today's big cars. If we use such cars in

the (2)_____, there will be less pollution in the air. There will be more (3)_____ for parking cars in cities, and

the streets will be less crowded. Three such cars park in the space that is needed for one of today's cars.

    The little cars will be very cheap. They will be very safe, too, because these little cars can go at a (4)_____

of only 65 kilometers per hour.

     The cars of the future will be fine for getting around a city, but they will not be useful for long trips. If the

car is powered by electricity, it will have two batteries-one battery (蓄电池) for the motor and the other for the

lights, signals, etc. If the little cars run on gasoline (汽油), they will go 450 kilometers before they need to stop

for more gasoline.

    If big cars are still used along with the small ones. We must (5)_____ two sets of roads, one for the big,

 (6)_____ cars and the other for the (7)_____, slow ones.

1. 根据上下文填词，完成短文，每空一词。

(1)______(2)______(3)______(4)______(5)______(6)______(7)______

2. 根据短文内容将句子补充完整。

(1). If we use these little cars in the future, there will ______ in the air.

(2). In the space for one of today's cars we will be able to park ______.

(3). The cars of the future will be fine for ______.

(4). If small cars are used along with today's big ones, we must build two sets of ______.

下述疾病可致云雾移睛，除了（）

A.葡萄膜炎

B.视网膜炎

C.玻璃体退行性变

D.中浆

E.眼内出血

下列有关室外消火栓维护保养错误的是（）。

A、每月或重大节日前，应对室外消火栓进行一次全面检查

B、检查消火栓时，要放尽管道内锈水，吸干本体内余水或疏通放水阀，排除积水

C、消火栓周围10M内严禁停车，严禁设栏、设广告而围堵消火栓，不能影响消火栓正常使用

D、消火栓上所有部件必须保持良好，平时应做到无漏水、无锈蚀、开启方便、操作灵活

在定制Applet的绘图功能时，应该使用的方法是

A．init()

B．start()

C．paintComponent()

D．paint()

甲公司因为业务发展需要向银行贷款30万元，以公司所有一辆价值50万元的汽车作为抵押，签订抵押合同并且依法作了登记。后甲公司又因为与乙公司签订合同，为担保偿还合同价款25万元，将该汽车作为合同价款的抵押物抵押给乙公司。与乙公司的抵押合同未经登记。根据上述案情，依照担保法相关规定，回答下列问题，并说明理由。

若银行的贷款到期日在乙公司的合同价款到期日之后，则乙公司是否有权就汽车行使抵押权如果可以，怎样行使