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【单选题】
发动机某缸压力过低,其余各缸压力正常,其故障原因为( )
A.
活塞环磨损
B.
该缸气门关闭不严
C.
压缩比低
D.
发动机转速低
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【简答题】电子数据取证的基本原则是____、避免使用原始证据原则、记录所做的操作、遵循相关的法律法规。
【单选题】已知反应 的平衡常数 K=0.123 ,那么反应 的平衡常数为
A.
0.123
B.
– 0.123
C.
6.47
D.
8.13
【单选题】What does Buy Nothing Day mean?
A.
It's a specail day when people are encouraged not to buy anything.
B.
On that day,shops are all closed,so you can't buy anything.
C.
On that day,shops are so crowded that you can't get what you want.
【单选题】()是我国目前行政辖区最大、人口最多、管理行政单元最多的特大型城市
A.
上海
B.
重庆
C.
北京
D.
成都
【单选题】What does Buy Nothing Day mean?
A.
It's a special day when people are encouraged not to buy anything.
B.
On that day,shops are all closed,so you can't buy anything.
C.
On that day,shops are so crowded that you can't get what you want.
【多选题】莫尔条纹的特性有哪些?
A.
位移放大
B.
减小误差
C.
方向对应与同步
D.
检波
【单选题】What does Buy Nothing Day mean?
A.
It's a special day when people are encouraged not to buy anything
B.
On that day , shops are all closed,so you can't buy anything
C.
on that day ,shops are so crowded that you can't get what you want
【单选题】稳压电源的固定端子输出电源为5V,这个电压有没有调节电压的旋钮?()
A.
没有,输出5V左右固定不变
B.
有,可以在0~5V之间可调
【单选题】What does Buy Nothing Day mean?
A.
it's a special day when people are encouraged not to buy anything
B.
On that day, shops are all closed, so you can t buy anything
C.
On that day, shops are so crowded that you can t get what you want
【简答题】光栅的莫尔条纹具有哪些重要特性?
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