引导手信号，准许列车进入车场或车站，昼间（）为信号旗高举头上左右摇动。A.拢起的黄色

在护患关系建立初期，护患关系发展的主要任务是

A．对病人收集资料
B．确定病人的健康问题
C．与病人建立信任关系
D．为病人制定护理计划
E．为病人解决健康问题

室外机与室内机之间的距离应（），以利于发挥空调的效率。

A.尽量短；

B.尽量长；

C.由安装便利确定

Cost performance measurement is BEST done through which of the following ？（）

A．Asking for a percent complete from each team member and reporting that in the monthly progress report

B．Calculating earned value and using the indexes and other calculations to report past performance and forecast future performance

C．Using the 50/50 rule and making sure the life cycle cost is less than the project cost

D．Focusing on the amount expended last month and what will be expended the following month

已知三个等值电阻接成Y，若将其转化成等效的三角形接法，则对应的三个电阻将（）。

A、变小；

B、变大；

C、不变；

D、两个变大，一个变小。