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【单选题】
Asset trades that deal with debt instruments are best described asA.
share of stock.
B.
exchange rate.
C.
receipts.
D.
factors.
E.
bonds or bank deposits.
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举一反三
【单选题】There is supposed to be a safety _______ which makes it impossible for trains to collide.
A.
appliance
B.
accessory
C.
machine
D.
mechanism
【单选题】There is supposed to be a ____ which serves to give full play to workers’ initiative.
A.
mechanics
B.
machine
C.
mechanic
D.
mechanism
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【简答题】There is supposed to be a safety ________ which makes it impossible for trains to collide. A) appliance B) accessory C) machine D) mechanism
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