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【简答题】
跨装车组应使用车钩缓冲停止器，安装车钩（）下进行。
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皮皮学刷刷变学霸
举一反三
【单选题】有一电阻、电感和电容串联电路，R=600Ω，L=1.911亨，C=5.308μF，电路电压U=220V、ｆ＝50Hz,该电路的电流为。
A.
0.25A
B.
0.3A
C.
0.37A
D.
0.45A
【单选题】It is said that sixty percent of all energy ________ in the world today is being lost as wasted heat.
A.
produced
B.
producing
C.
to produce
D.
having produced
【单选题】Over time, my remaining hearing dropped to 20 percent, where it is today.
A.
Gradually I lost more of my hearing until I was 80 percent deaf, as I currently remain.
B.
Soon I lost 20 percent of my hearing after I moved to where I’m living today.
【单选题】蔡元培对大学精神的解释是
A.
“大学者，非谓有大楼之谓也，有大师之谓也”
B.
“大学之道在明明德，在亲民，在止于至善”
C.
“大学者，‘囊括大典，网罗众家’之学府也”
D.
“学术独立，思想自由，政罗教纲无羁绊之学府也
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