结构推理MA
结构推理腐朽
结构推理长径
结构推理SMZ
结构推理Factors Affecting the productivity and cost of ground-based systems
结构推理Herring bone felling technique
单选题边材腐朽是( )受木腐菌侵害所形成的边材部分的腐朽。 A．伐倒木 B．枯立木 C．病腐木 D．以上都对
单选题Which of the following skidding machine is the least expensive skidding machine to own and operate? ______ A. Grapple skidder B. Clam-bunk skidder C. Cable skidder
单选题If the timber has been purchased on a lump-sum basis, inattention to bucking decisions can create large financial losses to ______. When timber has been purchased on a (per unit of volume) harvested basis, the losses associated with miss cut logs are bome by the ______. A. timber buyer, landowner B. landowner, timber buyer C. forest manager, logger
单选题Among the three time study methods, ______ are (is) statistical based procedure(s). A. work sampling and elemental time study methods B. gross time study and work sampling methods C. only elemental time study method
单选题商品包装按其作用可分为运输包装和( )。 A．销售包装 B．大包装 C．中包装 D．外包装
单选题生产企业对原材料、外构件等质量进行的检验称为( )。 A．工序检验 B．进货检验 C．中间检验 D．成品检验
单选题任何商品都必须具有( )。 A．安全卫生性 B．审美性 C．适用性 D．经济性
单选题At a standard lumber mill, the first grading choice for softwood is the ______. A. Factory Class B. Veneer Class C. Sawlog Class
单选题The first step in harvesting a timber is ______. A. Delimbing B. Felling C. Bucking
单选题Delimbing gate works as ______. A. Single-stem delimbing with transverse feeding B. Multi-stem delimbing with lengthwise feeding C. Multi-stem delimbing with transverse feeding
单选题水曲柳树种为( )。 A．散孔材 B．半散孔材 C．环孔材 D．半环孔材
单选题深虫眼是指昆虫蛀蚀原木的深度自( )以上的虫眼。 A．1mm B．10mm C．3mm D．30mm
单选题Generally, machine utilization rate should be ______ machine mechanical availability. A. less than or equal to B. greater than or equal to C. always equal to
单选题对原木材色、光泽、纹理进行检验时，主要使用( )检验方法。 A．视觉 B．听觉 C．嗅觉 D．触觉