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【单选题】
稳压管的稳压是其工作在( )。
A.
正向导通
B.
反向截止
C.
反向击穿
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参考答案：
举一反三
【单选题】Many vehicle manufacturers recommend that a special electrical connector be installed between the battery and the battery cable when testing for ( ).
A.
Battery drain (parasitic drain)
B.
Specific gravity
C.
Battery voltage
D.
Battery charge rate
查看完整题目与答案
【简答题】下列关于人防工程中的避难走道的设置要求说法错误的是( )。 A.避难走道直通地面的出口不应少于2个，并应设置在不同方向 B.避难走道的装修材料燃烧性能等级应为B级 C.防火分区至避难走道人口处应设置前室，前室面积不应小于5m2 D.避难走道应设置消火栓、火灾应急照明、应急广播和消防专线电话 E.通向避难走道的各防火分区人数不等时，避难走道的净宽不应小于设计容纳人数最多一个防火分区通向避难走道各安全...
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【单选题】A user reports that their cell phone battery is dead and cannot hold a charge. Which of the following should be done when disposing of the old battery？（）
A.
Recycle the battery.
B.
Store the battery.
C.
Place battery in a sealed plastic bag.
D.
Disassemble the battery.
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【判断题】在金属材料中，晶界会阻碍晶体变形，使其强化。
A.
正确
B.
错误
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【单选题】When chatting with her on the mobile phone, the battery _ dead suddenly.
A.
went
B.
came
C.
remained
D.
changed
查看完整题目与答案
【单选题】When a battery is continuously exposed to low temperatures, the best procedure to keep it from freezing is to _________.
A.
remove the battery caps
B.
securely cover the battery
C.
keep the battery fully charged
D.
disconnect the battery
查看完整题目与答案
【单选题】海运货物运输保险业务中,单独海损
A.
属于部分损失
B.
属于全部损失
C.
有时为部分损失，有时为全部损失
D.
要所有的货主一起赔偿的损失
查看完整题目与答案
【单选题】When there is a discrepancy between ideal and the reality, people are most likely to become______.
A.
violent
B.
depressed
C.
emotionless
D.
impulsive
查看完整题目与答案
【单选题】When charging a lead acid (flooded-type) battery, ( ).
A.
The initial charging rate should be about 35 amperes for 30minutes
B.
The battery may not accept a  charge for several hours, yet may still be a good (serviceable) battery
C.
The battery temperature should not exceed 51.6°C (125°F) (hot to touch)
D.
All of the above
查看完整题目与答案
【单选题】关于冷裂纹,下列说法错误的是 。
A.
产生于焊接过程
B.
通常出现在热影响热影响区的焊道下、焊趾和根部中
C.
焊前对焊接材料进行烘焙，可以防止冷裂纹的产生
D.
选用低氢型焊条，可以防止冷裂纹的产生
查看完整题目与答案
相关题目：
【单选题】Many vehicle manufacturers recommend that a special electrical connector be installed between the battery and the battery cable when testing for ( ).
A.
Battery drain (parasitic drain)
B.
Specific gravity
C.
Battery voltage
D.
Battery charge rate
查看完整题目与答案
【简答题】下列关于人防工程中的避难走道的设置要求说法错误的是( )。 A.避难走道直通地面的出口不应少于2个，并应设置在不同方向 B.避难走道的装修材料燃烧性能等级应为B级 C.防火分区至避难走道人口处应设置前室，前室面积不应小于5m2 D.避难走道应设置消火栓、火灾应急照明、应急广播和消防专线电话 E.通向避难走道的各防火分区人数不等时，避难走道的净宽不应小于设计容纳人数最多一个防火分区通向避难走道各安全...
查看完整题目与答案
【单选题】A user reports that their cell phone battery is dead and cannot hold a charge. Which of the following should be done when disposing of the old battery？（）
A.
Recycle the battery.
B.
Store the battery.
C.
Place battery in a sealed plastic bag.
D.
Disassemble the battery.
查看完整题目与答案
【判断题】在金属材料中，晶界会阻碍晶体变形，使其强化。
A.
正确
B.
错误
查看完整题目与答案
【单选题】When chatting with her on the mobile phone, the battery _ dead suddenly.
A.
went
B.
came
C.
remained
D.
changed
查看完整题目与答案
【单选题】When a battery is continuously exposed to low temperatures, the best procedure to keep it from freezing is to _________.
A.
remove the battery caps
B.
securely cover the battery
C.
keep the battery fully charged
D.
disconnect the battery
查看完整题目与答案
【单选题】海运货物运输保险业务中,单独海损
A.
属于部分损失
B.
属于全部损失
C.
有时为部分损失，有时为全部损失
D.
要所有的货主一起赔偿的损失
查看完整题目与答案
【单选题】When there is a discrepancy between ideal and the reality, people are most likely to become______.
A.
violent
B.
depressed
C.
emotionless
D.
impulsive
查看完整题目与答案
【单选题】When charging a lead acid (flooded-type) battery, ( ).
A.
The initial charging rate should be about 35 amperes for 30minutes
B.
The battery may not accept a  charge for several hours, yet may still be a good (serviceable) battery
C.
The battery temperature should not exceed 51.6°C (125°F) (hot to touch)
D.
All of the above
查看完整题目与答案
【单选题】关于冷裂纹,下列说法错误的是 。
A.
产生于焊接过程
B.
通常出现在热影响热影响区的焊道下、焊趾和根部中
C.
焊前对焊接材料进行烘焙，可以防止冷裂纹的产生
D.
选用低氢型焊条，可以防止冷裂纹的产生
查看完整题目与答案
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