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【判断题】
设A,B为n阶方阵,若 AB 可逆,则 A , B 都可逆。A.
正确
B.
错误
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【单选题】Suppose the price of crude oil is $95 per barrel in New York and $85 per barrel in Texas, and the transaction costs for trading between the two markets are $15 per barrel. What actions should you tak...
A.
Buy oil in Texas and sell oil in NY
B.
Sell oil in Texas and buy oil in NY
C.
Buy oil in both markets and wait for higher prices
D.
Do not buy or sell oil in either market
【简答题】What immediate actions should be taken for engine room flooding?
【简答题】原子轨道杂化后组成的新轨道称为( )。
【单选题】When having a fire alarm during normal working hours, what immediate actions should be taken?
A.
Act according to instruction given in the fire plan
B.
Start the fire pump, the sooner the better
C.
Start searching for the fire to determine if it is in the engine room
D.
Everybody gathers in the safety center
【简答题】肘关节是一个复合关节,它包括________,________和____________。
【简答题】肘关节是一个复合关节，它包括（）、（）和（）关节。
【简答题】What actions should you take if the exhaust temperature of the main engine is excessively high?
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