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【多选题】
乳酸循环的生理意义有( )
A.
短时间内提供大量能量。
B.
乳酸再利用，避免了乳酸的损失。
C.
避免因乳酸堆积引起酸中毒。
D.
为某些物质的生物合成提供前体。
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举一反三
【单选题】17 Increasing resources on the critical path activities may not always shorten the length of the project because:
A.
Certain activities are time-dependent rather than resource-dependent (i.e., using three ovens rather than one to bake a cake).
B.
Safety, OSHA and EPA may have placed restrictions on the number of people used on certain activities or in the physical location of the project.
C.
The skill level of the added resources might not be appropriate for the activities to be performed.
D.
Adding more resources may create additional work and produce inefficiencies (i.e., additional people may need training and supervision.)
E.
All of the above
查看完整题目与答案
【单选题】If the resources are always preempted from the same process __________ can occur.
A.
deadlock
B.
system crash
C.
aging
D.
starvation
查看完整题目与答案
【判断题】Resources always move easily from one economic activity to another.
A.
正确
B.
错误
查看完整题目与答案
【单选题】门板与门框平齐;地坎槽无异物;(2分)
A.
合格
B.
不合格
查看完整题目与答案
【单选题】飞机的登机门通常分为主登机门和服务门
A.
主登机门在机身的左侧，服务门在机身的右侧
B.
主登机门在机身的右侧，服务门在机身的左侧
C.
在紧急情况下主登机门可以当应急出口，服务门不行
D.
在紧急情况下服务门可以当应急出口，主登机门不行
查看完整题目与答案
【单选题】Britain has always been fortunate in having plentiful energy resources. At the end of the eighteenth century these were principally coal and, in places water power from swift-flowing streams and river...
A.
rich energy resources
B.
water power
C.
the declining rural economy
D.
cheap labor
查看完整题目与答案
【单选题】135 Increasing resources on the critical path activities may not always shorten the length of the project because:
A.
Certain activities are time-dependent rather than resource-dependent (i.e., using three ovens rather than one to bake a cake).
B.
Safety, OSHA and EPA may have placed restrictions on the number of people used on certain activities or in the physical location of the project.
C.
The skill level of the added resources might not be appropriate for the activities to be performed.
D.
Adding more resources may create additional work and produce inefficiencies (i.e., additional people may need training and supervision.)
E.
All of the above
查看完整题目与答案
【简答题】A．They are always made of stone. B．They are painted in bright colors. C．They contain moving parts. D．They make use of holes.
查看完整题目与答案
【单选题】Scarce resources mean
A.
Resources are not renewable
B.
Resource must be protect for next generation
C.
Resources will be exhausted
D.
Comparing with demand, resources are always limited
查看完整题目与答案
【判断题】门板与门框平齐;地坎槽无异物;(1分)
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】17 Increasing resources on the critical path activities may not always shorten the length of the project because:
A.
Certain activities are time-dependent rather than resource-dependent (i.e., using three ovens rather than one to bake a cake).
B.
Safety, OSHA and EPA may have placed restrictions on the number of people used on certain activities or in the physical location of the project.
C.
The skill level of the added resources might not be appropriate for the activities to be performed.
D.
Adding more resources may create additional work and produce inefficiencies (i.e., additional people may need training and supervision.)
E.
All of the above
查看完整题目与答案
【单选题】If the resources are always preempted from the same process __________ can occur.
A.
deadlock
B.
system crash
C.
aging
D.
starvation
查看完整题目与答案
【判断题】Resources always move easily from one economic activity to another.
A.
正确
B.
错误
查看完整题目与答案
【单选题】门板与门框平齐;地坎槽无异物;(2分)
A.
合格
B.
不合格
查看完整题目与答案
【单选题】飞机的登机门通常分为主登机门和服务门
A.
主登机门在机身的左侧，服务门在机身的右侧
B.
主登机门在机身的右侧，服务门在机身的左侧
C.
在紧急情况下主登机门可以当应急出口，服务门不行
D.
在紧急情况下服务门可以当应急出口，主登机门不行
查看完整题目与答案
【单选题】Britain has always been fortunate in having plentiful energy resources. At the end of the eighteenth century these were principally coal and, in places water power from swift-flowing streams and river...
A.
rich energy resources
B.
water power
C.
the declining rural economy
D.
cheap labor
查看完整题目与答案
【单选题】135 Increasing resources on the critical path activities may not always shorten the length of the project because:
A.
Certain activities are time-dependent rather than resource-dependent (i.e., using three ovens rather than one to bake a cake).
B.
Safety, OSHA and EPA may have placed restrictions on the number of people used on certain activities or in the physical location of the project.
C.
The skill level of the added resources might not be appropriate for the activities to be performed.
D.
Adding more resources may create additional work and produce inefficiencies (i.e., additional people may need training and supervision.)
E.
All of the above
查看完整题目与答案
【简答题】A．They are always made of stone. B．They are painted in bright colors. C．They contain moving parts. D．They make use of holes.
查看完整题目与答案
【单选题】Scarce resources mean
A.
Resources are not renewable
B.
Resource must be protect for next generation
C.
Resources will be exhausted
D.
Comparing with demand, resources are always limited
查看完整题目与答案
【判断题】门板与门框平齐;地坎槽无异物;(1分)
A.
正确
B.
错误
查看完整题目与答案