【单选题】为预防压疮的发生,进行体位变换时每次间隔时间不超过
【单选题】A centrifugal fuel oil purifier should be shut down if ________.
A.
more sealing water is needed
B.
the cover clamp needs tightening
C.
the purifier has a bad vibration when started
D.
water is discharged from the overflow line
【单选题】centrifugal fuel oil purifier should be shut down if ______.
A.
the cover clamp needs tightening
B.
more sealing water is needed
C.
the purifier has a bad vibration when started
D.
water is discharged from the overflow line
【单选题】在使用万用表过程中,()用手去接触表笔的金属部分 ,这样一方面可以保证测量的准确,另一方面也可以保证人身安全
【多选题】下列关于塑料注射模装配精度的要求说法正确的有( )。
A.
Ⅰ级注射模模架主要分型面闭合面的贴合间隙值为0.02mm
B.
Ⅱ级注射模模架主要分型面闭合面的贴合间隙值为0.03mm
C.
Ⅰ级注射模模架主要模板组装后基准面移位偏差值为0.02mm
D.
Ⅱ级注射模模架主要模板组装后基准面移位偏差值为0.04mm
E.
模具型腔和型芯的设计与制造公差一般为塑件尺寸公差的1/2
【单选题】In a disk-type lubricating oil purifier, _______.
A.
the purifier driving gears are lubricated by the reclaimed oil as it leaves the bowl
B.
all dirt and sludge are automatically discharged with the cooling water
C.
sealing water must never be supplied until after oil is fed to the unit
D.
deterioration of the bowl ring gasket will cause the purifier to lose its water seal
【简答题】请将下列句子翻译成汉语。Il n'a aucun avenir dans cette société.