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【多选题】
下列各项中,属于企业“利润分配”科目核算内容的有( )。A.
提取法定盈余公积
B.
提取任意盈余公积
C.
向投资者分配利润
D.
盈余公积补亏
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举一反三
【单选题】Rotating shafts particularly those that run at high speeds, must be designed to avoid operation at speeds.
A.
. low
B.
.overload
C.
critical
D.
hollow
【单选题】下列反应中，既是氧化还原反应，又是△H＞0的反应的是
A.
铝粉和三氧化二铁反应
B.
Ba(OH) 2 ·8H 2 O和NH 4 Cl晶体混合反应
C.
灼热的焦炭与二氧化碳反应
D.
镁和稀硫酸反应
【单选题】Engine speeds at which resonance can occur are termed ____.
A.
maximum speeds
B.
full speeds
C.
sea speeds
D.
critical speeds(临界转速)
【单选题】Engine speeds at which resonance can occur are termed _____.注:resonance 共振
A.
maximum speeds
B.
full speeds
C.
sea speeds
D.
critical speeds
【单选题】Critical speeds occurring within the operating speed range of a main propulsion diesel engine may be changed, or have their damaging effects reduced by a/an _____.
A.
spherically seated crankshaft bearing
B.
engine support vibration isolator
C.
detuner or viscous fluid damper
D.
lightened crankshaft flywheel
【简答题】汽车的公害包括哪些方面？发动机排放的有害气体主要有哪几种？
【简答题】汽车公害的内容，实现汽车环保的途径有哪些。
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