【单选题】安装工程一般以定额( )为基础计算各项费用。 A 、直接费 B 、材料费 C 、机械台班使用费 D 、人工费
A.
、直接费 B 、材料费 C 、机械台班使用费 D 、人工费
B.
、材料费 C 、机械台班使用费 D 、人工费
【单选题】患者男,45岁。饮酒史25年,今年出现乏力、食欲减退、腹胀不适感等症状。体检:面部蜘蛛痣,脐部周围可见“水母头”样静脉,腹软,移动性浊音(+)。根据病史与临床表现,最可能的诊断是
【单选题】加味荆芥散主要用于产后血晕,其中荆芥应付给
【单选题】The main fixed parts of the marine diesel engine are the main bearings, the bedplate, thecylinder and ( )
【单选题】If the bedplate was too rigid, then as the hull flexed, the ______, which secure the engine into the ship would be likely to break, and there would be a danger of the bedplate cracking.
【单选题】The bedplate must be rigid enough to support the weight of the rest of the engine, and maintain the crankshaft, which sits in the bearing housings in the ______, in alignment.