常用的回火方法有低温回火、()和()。...

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【简答题】

常用的回火方法有低温回火、()和()。

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参考答案：

举一反三

【单选题】卫星通信是利用人造地球卫星作为中继站转发无线信-号，在两个或多个地球站之间进行的通信，其通信业务包括电报、电话、电视、数据传输及综合业务数字网等。卫星最大的通信距离是( )km。

40000

20000

18000

12000

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【单选题】以下关于铁路通信网的说法错误的是

移动通信网提供无线语音、数据业务，如车地通信、手机通话、短信等

基础承载网是为通信网运营提供支撑服务的网络，它包括同步网、信令网、网管及监控系统等

支撑网是为通信网运营提供支撑服务的网络，它包括同步网、信令网、网管及监控系统等

业务网是提供铁路通信业务网络的总称，包括铁路自动电话、调度通信、电视电话会议、视频监控、电报等系统

查看完整题目与答案

【判断题】特异性免疫细胞包括T细胞和B细胞。()

正确

错误

查看完整题目与答案

【单选题】Under rent control, tenants can expect

lower rent and higher quality housing.

lower rent and lower quality housing.

higher rent and a shortage of rental housing.

higher rent and a surplus of rental housing.

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【单选题】电信包括无线电、电报、电话、电视、数据通讯以及互联网（）等不同种类的通讯方式。

产品

即时通讯

平台

互动

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【单选题】Under rent control, landlords cease to be responsive to tenants' concerns about the quality of the housing because

with rent control, the government guarantees landlords a minimum level of profit.

they become resigned to the fact that many of their apartments are going to be vacant at any given time.

with shortages and waiting lists, they have no incentive to maintain and improve their property.

with rent control, it becomes the government's responsibility to maintain rental housing.

查看完整题目与答案

【单选题】According to the critics, rent control .

will always benefit those who rent apartments

is unnecessary

will bring negative effects in the long run

is necessary under all circumstances

查看完整题目与答案

【单选题】天然免疫系统免疫细胞包括( )

淋巴细胞

B细胞

T细胞

造血干细胞

NK细胞

查看完整题目与答案

【单选题】卫星通信是利用人造地球卫星作为中继站转发无线信-号，在两个或多个地球站之间进行的通信，其通信业务包括电报、电话、电视、数据传输及综合业务数字网等。 (1)卫星最大的通信距离是( )km。

40000

20000

18000

12000

查看完整题目与答案

【单选题】Under rent control, landlords cease to be responsive to tenants’ concerns about the quality of the housing because

with shortages and waiting lists, they have no incentive to maintain and improve their property.

they know they can never please their tenants.

the law no longer requires them to maintain their buildings.

it becomes the government’s responsibility.

查看完整题目与答案

相关题目：

查看完整题目与答案

【单选题】以下关于铁路通信网的说法错误的是

移动通信网提供无线语音、数据业务，如车地通信、手机通话、短信等

基础承载网是为通信网运营提供支撑服务的网络，它包括同步网、信令网、网管及监控系统等

支撑网是为通信网运营提供支撑服务的网络，它包括同步网、信令网、网管及监控系统等

业务网是提供铁路通信业务网络的总称，包括铁路自动电话、调度通信、电视电话会议、视频监控、电报等系统

查看完整题目与答案

【判断题】特异性免疫细胞包括T细胞和B细胞。()

正确

错误

查看完整题目与答案

【单选题】Under rent control, tenants can expect

lower rent and higher quality housing.

lower rent and lower quality housing.

higher rent and a shortage of rental housing.

higher rent and a surplus of rental housing.

查看完整题目与答案

【单选题】电信包括无线电、电报、电话、电视、数据通讯以及互联网（）等不同种类的通讯方式。

查看完整题目与答案

【单选题】Under rent control, landlords cease to be responsive to tenants' concerns about the quality of the housing because

with rent control, the government guarantees landlords a minimum level of profit.

they become resigned to the fact that many of their apartments are going to be vacant at any given time.

with shortages and waiting lists, they have no incentive to maintain and improve their property.

with rent control, it becomes the government's responsibility to maintain rental housing.

查看完整题目与答案

【单选题】According to the critics, rent control .

will always benefit those who rent apartments

is unnecessary

will bring negative effects in the long run

is necessary under all circumstances

查看完整题目与答案

查看完整题目与答案

查看完整题目与答案

【单选题】Under rent control, landlords cease to be responsive to tenants’ concerns about the quality of the housing because

with shortages and waiting lists, they have no incentive to maintain and improve their property.

they know they can never please their tenants.

the law no longer requires them to maintain their buildings.

it becomes the government’s responsibility.

查看完整题目与答案

参考解析：

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