巷道掘进施工时，（ ）是最繁重、最费工时的工序。
【单选题】
Jason Stenquist
A.
says that he switched to electrical engineering because he loves working with tools.
B.
points out that there are enough people to fill the jobs that don’t need much skill.
C.
points out that the US doesn’t manufacture anything anymore.
D.
believes that it is important to keep a close eye on the age of his workers.
E.
says that for factory owners, workers are harder to find because of stiff competition.
F.
points out that a work / life balance can attract young people into manufacturing.
G.
says that the manufacturing recession is to blame for the lay-off of the young people’s parents.
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【单选题】
下列关于风险管理策略的说法，正确的是（ ）。
“不要将所有的鸡蛋放在一个篮子里”隐含的是风险转移的思想
风险分散策略的成本主要是分散投资过程中增加的各项交易费用
风险对冲的局限性在于其是一种消极的风险管理策略
风险补偿是一种事后的损失补偿策略
