反萃塔脉冲旋转阀断的判断依据为()。
A、现场检查旋转阀工作状况
B、反萃温度降低
C、界面波动变小
D、反萃效率降低
参考答案:A, C, D
The birth planning policy allows my parents to have a second child because of my disability, but to look after me, they chose .
A.not to do
B.not to
C.not to have
D.to not have one
血站应当给献血者提供安全()的条件;对初次献血者,应予以必要的()。
A.卫生便利;心理疏导和安慰
B.卫生便利;献血知识辅导
C.卫生温馨;心理疏导和安慰
D.卫生温馨;献血知识辅导