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【多选题】
冷料穴的功能有( )。A.
收集熔体流动的前锋冷料
B.
避免冷料进入型腔
C.
避免形成强度不同的熔接纹
D.
将熔料从注塑机喷嘴引人模具中
E.
实现熔体的分流和转向
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举一反三
【多选题】Which of the following expressions can be used to offer r easons for application ?
A.
Well, I know you do a very international business, so I thought I would learn some advanced methods of management here.
B.
My past experience and my major in the university are closely related to this job.
【单选题】Even a mighty express train can be held up by signals. Which of the following words can be used to replace “ held up ”? [ ]
A.
delayed
B.
slowed up
C.
halted
D.
retarded
【单选题】Which statement can be supported by Heather Dickinson and Louise Parker's new findings?
A.
Radiation has contributed to the disease.
B.
Putting a lot of people from rural area in a large town increases the risk of childhood leukemia.
C.
Population mixing is the most important reason for leukemia cluster.
D.
Childhood leukemia is caused by an unusual infection.
【单选题】The tracks on a disk which can be accessed without repositioning the R/W heads is
A.
Surface
B.
Cylinder
C.
Cluster
D.
All of the above
E.
None of the above
【单选题】Which statement can be supported by Heather Dickinson and Louise Parker's new findings?
A.
Radiation has contributed to the disease.
B.
Putting a lot of people from rural area in a large towns increases the risk of childhood leukaemia.
C.
Population mixing is the most important reason for leukaemia cluster.
D.
Childhood leukaemia is caused by an unusual infection.
【单选题】Which statement can be supported by Heather Dickinson and Louise Parker's new findings?
A.
Radiation has contributed to leukaemia.
B.
Putting a lot of people from rural area in a large towns increases the risk of childhood leukaemia.
C.
Population mixing is the most probable cause for leukaemia clusters.
D.
Childhood leukaemia is caused by an unusual infection.
【单选题】which of the following statements is true according to the text?
A.
70% of the cars can be rented out on holiday.
B.
70% of the customers are white-collar employees.
C.
More firms are open for service during holiday seasons.
D.
Some firms rent out all their cars during holiday seasons.
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