在整体式车身发动机舱部位,那些部件没有吸能区设计?()
A、纵梁
B、发动机罩
C、前围板
参考答案:C
当结构承受三向拉伸应力.时,容易产生()。
A.塑性断裂
B.脆性断裂
C.其他形式断裂
·Look at the questions for this part. ·You will hear a passage about "American Weighs In ". You will listen to it twice. ·For questions 24-30, indicate which of the alternatives A, B, or C is the most appropriate response. ·Mark one letter A, B, or C on the Answer Sheet.
Koop once launched an assault on ______.
A.chronic ailments
B.obesity
C.smoking