搜题请搜索小程序“爱下问搜题”
问题 单项选择题

古蔡法检查砷盐装置中，导管中装入醋酸铅棉花的作用是（）

A．消除硫化物生成硫化氢的干扰

B．过滤砷化氢气体

C．防止反应液上升

D．富集砷化氢气体

E．纯化反应产物

答案

参考答案：A

选择题

太阳系的八大行星，与太阳最近的[ ]

A、金星

B、火星

C、水星

D、海王星

查看答案
单项选择题

A client has been told to take ibuprofen (Motrin, Advil) to relieve the pain of her rheumatoid arthritis. Which of the following statements indicates the client understands how to take this drug safely and effectively

A．"I should not take aspirin with this drug unless my physician says to. "

B．"I should not take this drug with antacids or food products. "

C．"I do not need to worry about this medicine irritating my stomach. "

D．"I should notice the effects of this medicine within the first few days. "
查看答案