The purpose of this ad campaign is to（）the prospective customers’interest in this latest model of ours.
A. appeal
B. encourage
C. arouse
D. attract
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下列哪项不属于氩气刀操作流程：（）.
A. 选择合适的负极板粘贴于病人的肌肉丰富的部位
B. 打开开关，调节所需输出功率
C. 术中每小时检查负极板粘贴情况
D. 手术结束先关主机电源开关，再关氩气开关
Diesel engine mufflers or silencers reduce the engine exhaust noise by （）
A. passing the exhaust through long head pipes
B. diffusing exhaust vibrations through activated carbon baffles
C. increasing the exhaust gas velocity
D. reducing the exhaust gas velocity
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