在有些汽油机活塞裙部开有“T”和“П”形槽,开槽的位置应位于作功行程中,承受侧压力的一侧。
参考答案:错
According to INCOTERMS 2000, when the seller is responsible for the arrival of the goods at the agreed place or point of destination, the corresponding trade terms are following except ().
A.DDU
B.DDP
C.CFR
D.DEQ
下列哪种情况能出现脊柱圆弧形后凸
A.类风湿性脊柱炎B.脊柱结核C.佝偻病D.姿态性驼背E.青年性驼背