对于全向站,如果小区的半径为R,则站点的覆盖面积为()。
A. 1.5*R*R
B. 1.73*R*R
C. 1.95*R*R
D. 2.6*R*R
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满灌疗法属于心理治疗法中的()。
A. 行为治疗法
B. 精神分析法
C. 认知治疗法
D. 知觉疗法
Which of the following machinery space operations is required to be logged in the Oil Record Book?()
A. Ballasting or cleaning of fuel oil tanks
B. Shifting suction of main fuel pump to reserve fuel oil tank
Changing out sprayer plates to adjust for steam demand
Daily inspection of engine room bilge
爆炸性气体环境电缆及其附件在安装和使用时,应能防止受到外来机械损伤、腐蚀或化学影响。
A. 正确
B. 错误