单一品种情况下,保本点销售量随着边际贡越率上升而上升。
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单价单独变动时,会使安全边际反方向变动。
A. 对
B. 错
在一定时期内,如果企业的保本作业率为1,则可以断定该企业处于保本状态。
A. 对
B. 错
Lesson 7 短听力选择 1听一遍，选择正确答案
A. Two aircraft collided with each other.
B. The aircraft suffered from burst tyre.
C. There was a fuel leak on the starboard wing.
D. The left wing fuel tank punctured.
Lesson 7 短听力选择 2听一遍，选择正确答案
An aircraft mistakenly blocked his way.
B. ChinaSouthern1347 taxied to a wrong way.
C. Boeing747 encountered gear problem.
D. An unreported vehicle was on the Taxiway B
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