49. 一張灰階值為256之1024x1024的黑白照片，在不壓縮的情況下，需要_______MB (mega byte)儲存， (A) 0.25 (B) 0.5 (C) 1 (D) 1.5

8. What does it mean when the sensitivity of a test is said to be high? (A) It means that, in the case of a patient not having the disease, the chance of getting a positive test result is (relatively) high. (B) It means that, in the case of a patient having the disease, the chance of getting a positive test result is (relatively) high. (C) It means that, in the case of a patient not having the disease, the chance of getting a negative test result is (relatively) high. (D) It means that, in the case of a patient having the disease, the chance of getting a negative test result is (relatively) high.

49. 一張灰階值為256之1024x1024的黑白照片，在不壓縮的情況下，需要_______MB (mega byte)儲存，
(A) 0.25
(B) 0.5
(C) 1
(D) 1.5

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