[单选] 给婴儿进行抚触，适宜时间为（）。

《拾遗记》 简述影响土壤水分状况的因素。 经营第二类医疗器械的企业应当办理（）方可经营。 《医疗器械经营许可证》。 《产品备案凭证》。 《医疗器械经营备案凭证》。 无需办证。 You develop a Windows Communication Foundation (WCF) service to generate reports. Client applications call the service to initiate report generation but do not wait for the reports to be generated. The service does not provide any status to the client applications. The service class is defined as follows. (Line numbers are included for reference only.) 01 [ServiceContract] 02 public class ReportGeneratorService 03 { 04 ... 05 private int GenerateReports(int clientID) 06 { 07 ... 08 return 0; 09 } 10 } You need to ensure that client applications can initiate reports without waiting for status. Which two actions should you perform (Each correct answer presents part of the solution. Choose two.) （）。 Insert the following code at line 04. [OperationContract(IsOneWay=true)]。 Insert the following code at line 04. [OperationContract(AsyncPattern=false)]。 At line 05, change the GenerateReports method from private to public.。 Remove line 08. At line 05, change the return type of GenerateReports method to void.。 初凝时间的第一次测定为30min，临近初凝时间时每隔（）min测定一次。临近终凝时间时每隔（）min测定一次。 15，15。 5，10。 5，15。 15，5。 给婴儿进行抚触，适宜时间为（）。