直流电弧焊时，焊件接电焊机输出端的正极，焊枪接输出端的负极的接线法，叫（）接法。
参考答案：正
The nurse is developing a care plan for a client who's at risk for ineffective coping due to the effects of chronic illness. Which factor provides the best evidence that the client is at risk for difficulty in coping with his illness ？（）
A．Poor sleeping habits.
B．Lack of social support.
C．Adverse drug effects.
D．Presence of panic disorder.
电子现金账户余额上限遵循监管机构相关规定确定为（）人民币。
A.5000元（含）
B.10000元（含）
C.500元（含）
D.1000元（含）
