複選題
12. Choose the correct statements from the multiple choices regarding threads
(A)Kernel-level threads are easier and faster to create than user-level threads
(B) Different user-level threads of the same process can have different scheduling priorities
(C)A blocking kernel-level thread blocks all threads in the process
(D)For the Many-to-One multithreading model, one thread blocking causes all to block
(E) None of the above
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