凌渡Auto Hold工作时，只要车速为零则会自动提供制动力，让车辆稳稳停在原地。
参考答案：对
A client is admitted to the hospital for treatment of Prinzmetal's angina. When developing the client's plan of care, the nurse should remember that this type of angina is triggered by
A．coronary artery spasm.
B．an unpredictable amount of activity.
C．activities that increase oxygen demand.
D．an unknown source.
项目中整个采购工作的总体安排是指（）
A.采购规划
B.询价计划
C.选择卖方
D.合同管理
