When replacing a thermostatic expansion valve sensing bulb,

【名词&注释】

消化性溃疡(peptic ulcer)、口对口人工呼吸(mouth to mouth breath)、逆时针(inverted hour)、呕吐物(vomit)、顺时针(clockwise)、人工呼吸法(method of artificial respiration)

[单选题]When replacing a thermostatic expansion valve sensing bulb, it is necessary to

A. apply a light film of oil to increase heat transfer
B. apply a light film of oil to prevent oxidation
C. apply a heavy coating of grease to function as a heat sink
D. carefully coat the device with silicone sealant to reduce the effects of convective cooling

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举一反三：

[单选题]胸背部损伤明显者可采用哪种人工呼吸法^{(method of artificial respiration)}？

A. 仰卧压背法
B. 仰卧压胸法
C. 口对口人工呼吸法^{(method of artificial respiration)}
D. 举臂压胸法

[单选题]消化性溃疡并发出血时______。

A. 呕出物带粪臭味
B. 呕吐物为黄色胆汁
C. 呕咖啡样物
D. 呕吐物为所进食食物

[单选题]确定航道的原则是：船由海向里；在外海、海峡或岛屿之间的水道，原则上按：()

A. 围绕小片陆地的顺时针^(clockwise)航行的方向
B. 围绕小片陆地的逆时针航行的方向
C. 围绕大片陆地的顺时针^(clockwise)航行的方向
D. 围绕大片陆地的逆时针航行的方向

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