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【单选题】
where is the pig family?A.
in the supermarket
B.
at home
C.
on the street
D.
at school
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举一反三
【单选题】Which option belongs to the electrical properties of the material?
A.
electrical conductivity
B.
heat capacity
C.
thermal conductivity
D.
elastic modulus
【单选题】Which of the following tools is an advanced option of the Windows XP backup tool?（）
A.
Emergency Repair Disk
B.
Recovery Console
C.
Disk Probe
D.
Automated System Recovery
【单选题】Which of the following option is not the direct cause of the Tianjin explosion?
A.
Local drying of nitrocellulose in the container at the south side of the dangerous goods warehouse due to the loss of wetting agent
B.
Under the action of high temperature (weather) and other factors, the decomposition of nitrocellulose is accelerated to release heat, and the accumulated heat is self ignited
C.
The nitrocellulose and other dangerous chemicals in the adjacent containers burn in large area for a long time, resulting in the explosion of dangerous chemicals such as ammonium nitrate stacked in the arrival area
D.
Explosion of magnesium powder
【简答题】简述急性心肌梗死心电图的特征性改变
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