A woman seeking help at a community mental health center complains of fatigue, sensitivity to criticism, decreased libido, and feeling self-conscious. She also has aches and pains. A nursing diagnosis for this client might include

A. Delayed growth and development.
B. Ineffective role performance.
C. Posttrauma syndrome.
D. Chronic low self-esteem.

本课题中我们学过了四种途径可以制得氧气，如图所示：

(1)写出用B途径制取氧气的文字表达式：B：________________ 。

(2) ____________（填序号）途径发生的是物理变化。

(3)发生化学变化的途径，它们的基本反应类型是 _________

(4)为了使A、B两种途径更快地制取氧气，还需要加入___________ 。

(5)根据绿色化学理念，_____ （填序号）途径是实验室制氧气的最佳方案。