属于后鼻韵母的是（） A: A.ai B: B.ang C: C.un D: D.an

设A为n阶方阵，且|A|=a≠0，则|A*|等于______。 A: B: A．a C: B． D: C．an-1 E: D．an

设n阶方阵A的伴随矩阵为A*，且｜A｜＝a≠0，则｜A*｜＝【】 A: a B: B． C: D: C．an-1 E: D．an

A statement of opinion may be which of the following？（) A: A.a type of guarantee B: B.an affirmation of the value of the goods C: C.an implied assurance not expressly stated D: D.an explicit description of the goods

已知如下代码: boolean m=true; if(m==false) System.out.prinfln("False"); else System.out.println("True"); A．假 B．真 C．None D．An error will occur when running

You should conduct a sector search under which of the following circumstances?( ) A: A.The search target is sighted and then lost B: B.More than one vessel is available for a search C: C.The search object is a target that will be readily detected by radar D: D.AN aircraft is available to assist a surface vessel

Which of the following is an instance of misuse of confidential information？（) A: A.An agent gives the seller the principal's name and phone number in a fully disclosed transaction B: B.A principal gives the contact details of an agent to a third-party without the agent's knowledge C: C.An agent withholds critical information from the principal about the agency D: D.An agent divulges private details of his past employer to his principal

如果ξ与η不相关，则（）。 A: D（ξ+η）=Dξ+Dη B: D（ξ-η）=Dξ-Dη C: D（ξη）=Dξ·Dη D: E（ξη）=Dξ·Dη

已有定义intd=-2;，执行以下语句后的输出结果是：printf('*d(1)=%d*d(2)=%3d*d(3)=%-3d* ',d,d,d,d);printf('*d(4)=%o*d(5)=%7o*d(6)=%-7o* ',d,d,d,d);printf('*d(4)=%x*d(5)=%6x*d(6)=%-6x* ',d,d,d,d);

圆柱螺旋弹簧的旋绕比C是（） A: d/D B: d/D C: D/d D: D/d