Which of the following statements is true about the PKN model and the KGD model? A: PKN model is suitable for the fracture with a long fracture length greater than the fracture height. B: KGD model is suitable for the fracture whose height is far greater than its length. C: The plane assumption of PKN model is the direction of fracture width and height. D: The plane of KGD model is assumed to be joint width and seam length direction.

关于PKN模型和KGD模型，以下表述正确的是？ A: PKN模型适用于缝长远大于缝高的裂缝 B: KGD模型适用于缝高远大于缝长的裂缝 C: PKN模型平面假设是缝宽和缝高方向 D: KGD模型平面假设是缝宽和缝长方向

The weight without any weight of packing is called ( ) A: Theoretical Weight B: Net Net Weight C: Conditioned Weight D: Legal Weight

In the experiment of experimental pulmonary edema in mice, lung<br/>coefficient refers to ( ) A: Weight (g) / lung weight (g) B: Lung weight (mg) / body weight (mg) C: Body weight (g) / lung weight (mg) D: Lung weight (mg) / body weight (g) E: Body weight (mg) / lung weight (g)

The three identifiers, weight, Weight and WEIGHT, are NOT equal in C language.

In the experiment of experimental pulmonary edema in mice, lung coefficient refers to ( ) A: Weight<br/>(g) / lung weight (g) B: Lung<br/>weight (mg) / body weight (mg) C: Body<br/>weight (g) / lung weight (mg) D: Lung<br/>weight (mg) / body weight (g) E: Body<br/>weight (mg) / lung weight (g)

【单选题】The sum of zero fuel weight and fuel reserved is A. takeoff weight B. landing weight C. taxiing weight

Energy is usually measured ( ), and goods are sold ( ). A: by calories; by the weight B: by the calorie; by weight C: with calories; on weight D: in calories; by weight

The three identifiers, weight, Weight and WEIGHT, are NOT equal in C language. A: 正确 B: 错误

Legal weight is the weight of the goods and the ______ of the goods.