18. Please sort the following functions in descending order of their growth rate. (A)y＞z＞x＞w (B) z＞y＞w＞x (C) z＞y＞x＞w (D)y＞z＞w＞x (E) x＞y＞z＞w

8. Which of the following statements is NOT true? (A) The arithmetic logic unit (ALU) performs logic, shift, and arithmetic operations on data. (B) SRAM and DRAM are two main types of memory in computer system. (C) Cache memory is faster than main memory but slower than the CPU and its registers. (D) SCSI, FireWire, USB, HDMI are common controllers used in computer system. (E) Direct memory access (DMA) allows I/O devices to transfer data between each other without passing the data through CPU.

18. Please sort the following functions in descending order of their growth rate.

(A)y＞z＞x＞w
(B) z＞y＞w＞x
(C) z＞y＞x＞w
(D)y＞z＞w＞x
(E) x＞y＞z＞w

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