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【判断题】
对于 单电控二位三通电磁换向阀 而言, 所谓 “位”指的是为了改变气体方向,阀芯相对于阀体所具有的不同的工作位置。“通”的含义则指换向阀与系统相连的通口,有几个通口即为几通。A.
正确
B.
错误
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【单选题】A micrometer with ∆ ins =0.004mm is used to measure the diameter of a steel ball only once, what is the absolute uncertainty of the measured result?
A.
0.004 mm
B.
0.1 mm
C.
0.2 mm
D.
0.5mm
【简答题】A mercury manometer at 21.1(°C) reads 26.5 (cm). The local acceleration of gravity is 9.79(m)/(s)2. The barometer (brass scale) also at 21.1(°C) reads 74.19 (cm) of mercury . What is the absolute pres...
【简答题】What is the absolute minimum number of lifejackets required on board ship?
【单选题】In Fig. FE2.3, if the oil in region B has SG=0.8 and the absolute pressure at point A is 1 atm, what is the absolute pressure at point B?
A.
5.6kPa
B.
10.9kPa
C.
107kPa
D.
112kPa
E.
157kPa
【多选题】我国社会主义改造过程中出现了一些偏差,遗留了一些问题,具体表现为
A.
所有制结构过于单一
B.
在一定程度上排斥了商品经济和市场机制的正常运行
C.
要求过急，发展过快
D.
工作过粗，改造形式过于简单划一
【单选题】The gauge pressure inside a container is -0.5kg/cm2, then what is the absolute pressure exerted to the inside surface of this container?
A.
0.05Mpa.
B.
0.95 Mpa.
C.
05 Mpa.
D.
0.5 Mpa.
【单选题】The gauge pressure inside a container is -0.5kg/cm2, then what is the absolute pressure exerted to the inside surface of thin container?
A.
0.05Mpa
B.
0.95Mpa
C.
1.05Mpa
D.
0.5Mpa
【单选题】In Fig. FE2.3, if the oil in region B has SG=0.8 and the absolute pressure at point B is 96.5kPa, what is the absolute pressure at point A?
A.
11kPa
B.
41kPa
C.
86kPa
D.
91kPa
E.
10141kPa
【单选题】What is the absolute phrase in this sentence? Her kids tucked into bed, Jane could finally go to sleep.
A.
Her kids tucked into bed
B.
go to sleep
C.
Jane could finally go to sleep
D.
tucked into bed
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