项目经理在评估项目时间业绩表现时应该关注关键的和次关键的行为，一个这样做的方法就是以

电视机的室外天线能把电信号接收下来，是因为(　　)．

A．天线处于变化的电磁场中，天线中产生感应电流，相当于电源，通过馈线输送给LC回路

B．天线处于变化的电场中，天线中产生感应电流，相当于电源，通过馈线输送给LC回路

C．天线只是有选择地接收某电台的信号，而其他电视台信号则不接收

D．天线将电磁波传输到电视机内

下表所列物质晶体的类型全部正确的一组是()

A.A

B.B

C.C

D.D

儿童自我控制活动的类型包括()。

A、运动抑制

B、情绪抑制

C、认知活动抑制

D、即时满足

In January 2008 Arti entered in a contractual agreement with Bee Ltd to write a study manual for an international accountancy body’s award. The manual was to cover the period from September 2008 till June 2009, and it was a term of the contract that the text be supplied by 30 June 2008 so that it could be printed in time for September. By 30 May, Arti had not yet started on the text and indeed he had written to Bee Ltd stating that he was too busy to write the text.Bee Ltd was extremely perturbed by the news, especially as it had acquired the contract to supply all of the accountancy body’s study manuals and had already incurred extensive preliminary expenses in relation to the publication of the new manual.Required:In the context of the law of contract, advise Bee Ltd whether they can take any action against Arti. (10 marks)

喉功能过强与音调反常的矫治，最有效的是（）

A.声带休息，禁声或少说话

B.咀嚼发声疗法

C.反复练习屏气动作，使声带紧闭、胸腔固定，同时发声

D.建立胸腹式混合呼吸方式，练习控制呼气能力，使呼气慢而均匀，呼气期延长

E.以上都不对