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【单选题】
等额年金终值系数表示为( )A.
(F/A,i,n)
B.
(P/A,i,n)
C.
(A/F,i,n)
D.
(A/P,i,n)
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【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
C.
、机械台班使用费 D 、人工费
D.
、人工费
【单选题】The main fixed parts of the marine diesel engine are the main bearings, the bedplate, thecylinder and ( )
A.
the piston rod
B.
the connecting rod
C.
the fram
【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.
A.
through bolts
B.
jack bolts
C.
holding down bolts
D.
tap bolts
【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.
A.
longitudinal girders
B.
transverse girders
C.
fore girders
D.
aft girders
【简答题】加味荆芥散主要用于产后血晕，其中荆芥应付给 ( ) A．生荆芥 B.炒荆芥 C.荆芥穗 D.荆芥炭 E.荆芥根
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