【判断题】
国防力量建设中,常备军是基础。()
A. 对
B. 错
查看试卷，进入试卷练习
微信扫一扫，开始刷题
答案
B
解析
暂无解析
相关试题
【单选题】
I appreciate ___ to your home.
A. to be invited
B. to have invited
C. having invited
D. being invited
【单选题】
The socks were too small and it was only by ___ them that he managed to get them on.
A. spreading
B. extending
C. lengthening
D. stretching
【单选题】
The trade imbalance is likely to rise again in 2020. ___ a new set of policy actions will be required soon.
A.
B. ecause B. For
C. Hence
D. Therefore
【单选题】
A healthy life is frequently thought to be ___ with the open countryside and homegrown food.
A. associated
B. bound
C. involved
D. tied
【单选题】
My hands and feet were ___ with cold as I waited for the bus.
A. cliff
B. still
C. stiff
D. stick
【单选题】
The Foreign Minister made an excellent ___ on the current international situation.
A. committee
B. command
C. comment
D. commission
【单选题】
Over a third of the population was estimated to have no ___ to the health service.
A. assessment
B. assignment
C. exception
D. access
【单选题】
My father seemed to be in no ___ to look at my school report.
A. mood
B. emotion
C. attitude
D. feeling
【单选题】
He saw the publication of this book as an embarrassing invasion of his ___.
A. secret
B. privacy
C. private
D. piracy
【单选题】
I think I would have died of ___.
A. embarrass
B. embarrassing
C. embarrassed
D. embarrassment
【单选题】
He had an ___ at a restaurant in Greek Street at eight.
A. engagement
B. engage
C. contract
D. promise
【单选题】
These companies often encounter many ___ impediments to investment.
A. invisible
B. edible
C. feasible
D. capable
【单选题】
30 percent of reptiles, birds, and fish are currently ___ with extinction.
A. treated
B. threatened
C. endangered
D. threatening
【单选题】
They have a stronger ___ of the importance of economic incentives.
A. appreciation
B. learning
C. concept
D. idea
【单选题】
I believe I am capable of ___ the political consequences accurately.
A. guessing
B. evaluating
C. calculating
D. computing
【单选题】
When he opened the door, he used too much force and ___ the key.
A. trailed
B. varied
C. wicked
D. twisted
【单选题】
I’m very sorry to have ___ you with so many questions on such an occasion.
A. offended
B. impressive
C. bothered
D. interfered
【单选题】
It is sometimes difficult for young people from the countryside to ___ well to life in the big city.
A. suit
B. adapt
C. regulate
D. coordination
【单选题】
Our guide gave us a detailed ___of this painting but we still do not understand.
A. authority
B. interpretation
C. instruction
D. institution
【单选题】
If you want to ___ the wood, cut it with the grain, not against it.
A. break
B. burn
C. split
D. divide
【单选题】
They have a stronger ___ of the importance of economic incentives.
A. appreciation
B. learning
C. conception
D. idea
【单选题】
I believe I am capable of ___ the political consequences accurately.
A. guessing
B. betting
C. calculating
D. computing
【单选题】
30 percent of reptiles, birds, and fish are currently ___ with extinction.
A. treated
B. threatened
C. danger
D. threatening
【单选题】
Workers should occasionally walk around, ___ and avoid prolonged periods at the desk.
A. pull
B. lengthen
C. strain
D. stretch
【单选题】
These companies often encounter many ___ impediments to investment.
A. invisible
B. edible
C. feasible
D. capable
【单选题】
Running a kitchen ___a great deal of discipline and speed.
A. including
B. involving
C. involves
D. composes
推荐试题
【单选题】
容量为30VA至100VA(包括100VA)的变压器满负载时，其二次端子电压不得小于端子额定电压值的_______。[311010101]___
A. 80%
B. 85%
C. 90%
D. 95%
【单选题】
DR系列多功能熔丝装置备熔丝断路时_______。[311010103]___
A. 红色指示灯点亮
B. 黄色指示灯点亮
C. 红色和黄色指示灯同时点亮
D. 红色和黄色指示灯都不点亮
【单选题】
JHJ-40型电源转换接触器触点位置不应有歪扭现象，应保持接触面在_______以上,并紧密接触。[321010103]___
A. 1/3
B. 1/2
C. 2/5
D. 2/3
【单选题】
JHJ-40型电源转换接触器三个主触点应同时闭合和分断，误差不大于_______。[321010103]___
A. 0.05mm
B. 0.3mm
C. 0.5mm
D. 1mm
【单选题】
提速道岔断相保护器DBQX输出电压为直流_______。[321010102]___
A. 16V～24V
B. 17.5V～28V
C. 24V～28V
D. 28V～32V
【单选题】
提速道岔控制电路中的BHJ在三相电源断相时落下_______，用以保护电机。[323010103]___
A. 构通1DQJ自闭电路
B. 切断1DQJ自闭电路
C. 切断1DQJ励磁电路
D. 构通1DQJ励磁电路
【单选题】
PNX系列铁路信号智能电源屏过压阀值的调整范围为_______。(U为输入电源的电压值) [321010102]___
A. 0.6U～0.8U
B. 0.6U～0.9U
C. 1.1U～1.2U
D. 1.1U～1.3U
【单选题】
提速道岔控制电路中的BHJ在三相电源接通时吸起_______。[323010103]___
A. 构通1DQJ自闭电路
B. 切断1DQJ自闭电路
C. 切断1DQJ励磁电路
D. 构通1DQJ励磁电路
【单选题】
电源屏继电器电源应为直流24V，当回路负载在70%-80%范围内变化时，输出应稳定在_______范围。[321010102]___
A. 24V±0.5V
B. 24V±0.86V
C. 24V±0.9V
D. 24V±1V
【单选题】
大站电源屏直流和交流电路的电源及负载线对地绝缘电阻用500VMΩ表测量(在20±5℃、相对湿度95～98%的环境)应不小于_______。[323010103]___
A. 0.5MΩ
B. 1MΩ
C. 2MΩ
D. 5MΩ
【单选题】
信号电源屏当温度为10～35℃，相对湿度为5％～80％的环境中，所测得的各部绝缘电阻不低于_______。[321010103]___
A. O.5MΩ
B. 20MΩ
C. 50MΩ
D. 10MΩ
【单选题】
当输入电源屏的交流电源在＋15％～－20％范围变化时，经稳压(调压)后的电源允许波动范围应不大于_______。[311010103]___
A. ±1％
B. ±2％
C. ±3％
D. ±4％
【单选题】
15KVA大站调压屏，当自动调压系统发生故障使输出电压升至_______时，过压继电器应及时动作并切断升压回路，但不应造成停电。[311020201]___
A. 390V±5V
B. 400V±5V
C. 420V±5V
D. 410V±5V
【单选题】
在转换屏电压表上发现AB线电压为380伏，而BC和AC线电压在220伏左右，这时可断定为_______断相。[323020201]___
A. A相
B. B相
C. C相
D. A相和B相
