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【单选题】
以下表述正确的是A.
合外力矩对刚体做功，等于刚体定轴转动动能的增量
B.
刚体的总动能等于质心的平动动能加上过绕质心轴的转动动能
C.
含有刚体的力学系统，外力做功为零，则系统机械能守恒
D.
当刚体所受合外力为零时，刚体角动量守恒
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【简答题】最大的数域是哪一个?(即哪一个数域包含了所有的数域)
【单选题】Which of the following statements describes why a properly designed and executed audit may not detect a material misstatement in the financial statements resulting from fraud?
A.
Audit procedures that are effective for detecting unintentional misstatements may be ineffective for an intentional misstatement that is concealed through collusion.
B.
An audit is designed to provide reasonable assurance of detecting material errors, but there is no similar responsibility concerning fraud.
C.
The factors considered in assessing control risk indicated an increased risk of intentional misstatements, but only a low risk of unintentional misstatements.
D.
The auditor did not consider factors influencing audit risk for account balances that have effects pervasive to the financial statements taken as a whole.
【多选题】一般树木的耐盐力为0.1%〜0.2%,耐盐力较强的植物为0.4%〜0.5%,强耐盐力的植物可达0.6%〜1.0%。下列植物耐盐力强的是
A.
胡杨
B.
沙枣
C.
北美圆柏
D.
合欢
【单选题】---Passage 1--- ---Question 46. Why does the author say that one needn't be concerned about memory slips? //////////////////////////////////////////////////////////////////// (Para.1) Losing your abil...
A.
Not all of them are symptoms of dementia.
B.
They occur only among certain groups of people.
C.
Not all of them are related to one's age.
D.
They are quite common among fifty-year-olds.
【单选题】Why does Musk say that people travelling to Mars are at fatal risk?
A.
Because human beings can not live on Mars.
B.
Because there is no civilization on Mars.
C.
Because Space X has lots of setbacks currently.
D.
Because the long journey to Mars will cost their lives.
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