【名词&注释】
肺动脉高压(pulmonary hypertension)、室间隔缺损(ventricular septal defect)、操作方法(operation method)、Ⅰ型超敏反应(hypersensitivity ⅰ)、Ⅲ型超敏反应(hypersensitivity ⅲ)、劳动心理学(labour psychology)、动脉血氧饱和度(arterial oxygen saturation)、工业心理学(industrial psychology)、Ⅳ型超敏反应(type iv hypersenetivity)、青霉素过敏性休克
[单选题]What does the proof test load of an anchor chain demonstrate?()
A. Breaking strength of the chain
B. Strength of the chain to a specified limit
C. Adequate holding power for new bottom conditions
D. Safe working load of the chai