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【多选题】
齿形加工方法的选择主要取决于齿轮所需达到的( )、以及工厂现有的设备条件。A.
生产批量
B.
生产能力
C.
生产效率
D.
精度
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【简答题】What is the minimum salary for the two vacancies? ______ per month.
【单选题】what is the minimum Ethernet frame size?
A.
32bytes
B.
bytes
C.
1024bytes
D.
1500bytes
【简答题】What is the minimum size of the symbol?
【单选题】What is the minimum operation time of reserve source of energy on ships without an emergency energy source?
A.
1 hour
B.
6 hours
C.
12 hours
D.
24 hours
【单选题】What is the minimum operation time of reserve source of energy on ships with an emergency energy source?
A.
1 hour
B.
6 hours
C.
12 hours
D.
24 hours
【单选题】What is the minimum period of time that the air supply for a self-contained breathing apparatus is required to last?________.
A.
10 minutes
B.
20 minutes
C.
30 minutes
D.
90 minutes
【简答题】If the distribution ratio for substance A is 9.0，what is the minimum number of the 5.00mL portions of ether that must be used in order to extract 99.9% of substance A from 5.00mL of arl aqueous soluti...
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