单选题 Computer hardware engineers research, design, develop, and test computer hardware and supervise its manufacture and (73) . Hardware refers to computer (74) , circuit boards, computer systems, and related equipment such as keyboards, modems, and printers.

【正确答案】 D
【答案解析】
【正确答案】 A
【答案解析】试题73-74[分析]
计算机硬件工程师研究、设计、开发与测试计算机硬件和监督它的制造与安装。硬件是指计算机芯片、电路板，以及计算机系统的相关设备，例如键盘、Modem和打印机等。