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【单选题】
在既定的审计风险水平下, 检查风险 与认定层次 重大错报风险 成( )。
A.
正向变动关系
B.
反向变动关系
C.
正比例变动关系
D.
无关关系
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【单选题】普通机床床身的毛坯多采用( )
A.
冲压件
B.
锻件
C.
焊接件
D.
铸件
【单选题】Air at 1 atm and 10 °C flows across a bank of tubes 15 rows high and 5 rows deep at a velocity of 7m/s measured at a point in the flow before the air enters the tube bank. The surfaces of the tubes ar...
A.
36509
B.
12170
C.
18255
D.
8119
【单选题】普通机床床身的毛坯多采用( )
A.
冲压件
B.
焊接件
C.
铸件
D.
锻件
【单选题】Air at 1 atm and 10 °C flows across a bank of tubes 15 rows high and 5 rows deep at a velocity of 7m/s measured at a point in the flow before the air enters the tube bank. The surfaces of the tubes ar...
A.
7
B.
21
C.
10.5
D.
4.666666666666667
【单选题】Air at 1 atm and 10 °C flows across a bank of tubes 15 rows high and 5 rows deep at a velocity of 7m/s measured at a point in the flow before the air enters the tube bank. The surfaces of the tubes ar...
A.
10
B.
20
C.
40
D.
65
E.
15
F.
37.5
【单选题】Air at 1 atm and 10 °C flows across a bank of tubes 15 rows high and 5 rows deep at a velocity of 7m/s measured at a point in the flow before the air enters the tube bank. The surfaces of the tubes ar...
A.
178.7
B.
53.2
C.
87.8
D.
128.5
E.
190
【单选题】Air at 1 atm and 10 °C flows across a bank of tubes 15 rows high and 5 rows deep at a velocity of 7m/s measured at a point in the flow before the air enters the tube bank. The surfaces of the tubes ar...
A.
2.51
B.
0.0251
C.
2.59
D.
0.0259
E.
0.0255
F.
0.0293
【单选题】某单动往复栗 泵么活塞 直径为 4cm , 往复次数 为60次/min,冲程为1 5 cm , 该往复泵的理论流量为 ( ) L/min。
A.
11.3
B.
22.6
C.
678.2
D.
5.7
【单选题】Air at 1 atm and 10 °C flows across a bank of tubes 15 rows high and 5 rows deep at a velocity of 7m/s measured at a point in the flow before the air enters the tube bank. The surfaces of the tubes ar...
A.
0.7
B.
0.928
C.
0.978
D.
0.994
【单选题】Air at 1 atm and 10 °C flows across a bank of tubes 15 rows high and 5 rows deep at a velocity of 7m/s measured at a point in the flow before the air enters the tube bank. The surfaces of the tubes ar...
A.
190
B.
53.4
C.
88.1
D.
129
E.
179.4
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