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【简答题】
句型转换。 1. He has worked in this factory for 10 years . (就画线部分提问) ________ ________has he worked in this factory? 2. We have been playing football for two hours. (就画线部分提问) ________ ________have you been playing football? 3. I'm thinking about becoming an English teacher after graduation. (就画线部分提问) ________ ________ ________ ________ ________you thinking about ________ after graduation? 4. He has learnt English for 5 years. (改为同义句) He has learnt English________ ________ ________ ________. 5. He started to practice the guitar three hours ago. (用for改为同义句) He________ ________ practicing the guitar for three hours.
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【简答题】All processes share a semaphore variable mutex , initialized to 1. Each process must execute wait(mutex) before entering the critical section and signal(mutex) afterward. Suppose a process executes in...
【简答题】课本第176页2(1)
【单选题】Suppose that a process is in “Blocked” state waiting for some I/O service. When the service is completed, it goes to the __________
A.
Running state
B.
Ready state
C.
Suspended state
D.
Terminated state
【单选题】Suppose that a firm in an industry subject to diminishing returns to scale is initially in long run equilibrium. Which of the following will not be part of the industry adjustment process to a permane...
A.
Some firms will temporarily make economic profits.
B.
Some new firms will enter.
C.
The long run equilibrium price will be higher than the initial equilibrium price.
D.
All of the above will be consequences.
【简答题】All processes share a semaphore variable mutex , initialized to 1. Each process must execute wait(mutex) before entering the critical section and signal(mutex) afterward. Suppose a process executes in...
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