导线的电流密度越大,线芯的温升()。 A.越大 B.越小 C.与电流密度成正比 D.

题型:单项选择题

问题:

导线的电流密度越大,线芯的温升()。

A.越大

B.越小

C.与电流密度成正比

D.与电流密度成反比

考点:电子设备装接工电子设备装接工(初级)电子设备装接工(初级)题库
题型:单项选择题

A国恩格尔系数为63%,B国恩格尔系数为45%,那么以下说法错误的是:( )。

A.A国人民生活水平较为贫困

B.B国人民生活处于小康水平

C.A国比B国贫困

D.B国人民生活水平为温饱

题型:单项选择题

采用()措施,可以降低沉降器和旋分器入口处结焦。

A、缩短催化剂与油气分离时间

B、延长催化剂与油气分离时间

C、减少油气停留时间

D、增加油气停留时间

题型:单项选择题

客户张某给某商业银行信贷员小李出示了市科委颁发的获奖证书的复印件,小李据此签署了同意贷款的个人意见,小李的行为明显违反了( )。

A.了解客户

B.公平对待

C.协助执行

D.授信尽职

题型:单项选择题

The trip to the Mystery Caves will take place on Sunday, 27 July. You can book your tickets in Room 188 between 2:30 p.m. and 4:00 p.m. every day. Your parents should confirm (确认) the booking by writing to us as soon as possible. You should pay for the trip before 21 July. If we do not receive your money early enough, your booking will be cancelled(取消). If the trip does not take place for any reason, your money will be paid back.
We are planning to meet outside the railway station on Black Street at 8:00 a.m. It will take us about 2 hours to get to the center of the town by train, and from there we have to catch a bus. It will take another hour to get to the Mystery Caves on the bus.
We will spend about 1 hour and a half visiting the caves (山洞), and we hope to catch the 1:30 bus to Happy Lake for some swimming. If we are late, we will have to take the 3:00 bus straight back to Black Street.

How will they go to the Mystery Caves from the center of the town
[A] By ship.
[B] ay train.
[C] ay bus.

题型:单项选择题

20世纪50年代,欧美国家开始采用病案保存的方式是().

A.纸张

B.微缩

C.光盘

D.条形码

E.服务器终端

更多题库