面向对象数据模型中,类是对一组对象的抽象描述。

题型:判断题

问题:

面向对象数据模型中,类是对一组对象的抽象描述。

考点:大学试题地理信息系统(GIS)地理信息系统(GIS)题库
题型:判断题

Kate is an English girl. She lives in a tall building in the city of London. There are sixteen floors in the building, and she lives on the tenth floor. She uses a lift to go up and down. Kate studies in a middle school near her house and she works hard. She goes to school early. Every day she leaves her home at half past six. She walks to the lift, and it takes her down to the first floor. There is a bus stop near the building. Usually she takes No.7 bus to her school, but sometimes she goes on foot. It is only four kilometers to her school from the building. She gets to school at about seven twenty. Classes begin at eight. She goes to play games at three forty. She gets home at a quarter past five. She begins to do her homework at eight and finishes it at half past nine.

小题1:Kate lives in a tall building ________ London.

A.near

B.in

C.outside

D.far from小题2:She goes up and down the building ________.

A.in lift

B.by a lift

C.by lift

D.use a lift小题3:She leaves ________ at six thirty.

A.her home

B.the building

C.the lift

D.the bus stop小题4:She goes to school ________.

A.by bus

B.by bike

C.on foot

D.A and C小题5:It takes her ________ to do her homework.

A.about an hour

B.about one hour and half

C.eighty minutes

D.one hour and a half

题型:判断题

上下高处作业使用的脚手架应走斜道或梯子,作业人员不准沿()等攀爬。

A.栏杆

B.脚手杆

C.梯子

D.杆塔

题型:判断题

对光电效应的理解,以下说法正确的是( )

A.金属内的每个电子可以吸收一个或一个以上的光子,当它积累的动能足够大时,就能从金属逸出

B.如果入射光子的能量小于金属表面的电子克服原子核的引力逸出时需要做的最小功,光电效应便不能发生了。但如换用波长更长的入射光子,则有可能发生光电效应

C.发生光电效应时,入射光越强,光子的能量就越大,光电子的最大初动能越大

D.由于不同金属的逸出功是不相同的,因此使不同金属产生光电效应的入射光的最低频率也不相同

题型:判断题

肱骨髁上骨折好发于()

A.老年女性

B.老年男性

C.中年女性

D.中年男性

E.小儿

题型:判断题

关于新生儿经皮吸收的叙述不正确的是()

A.皮肤角化层薄

B.体表面积相对较大

C.药物经皮吸收较成人迅速广泛

D.经皮吸收作为一种给药方式应用比较广泛

E.碘酊、硼酸、类固醇激素等经皮吸收过多可发生中毒反应

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