皮皮学，免费搜题
登录
搜题
【单选题】
紫外分光光度法测定具有苯环的雌激素类药物,在下列哪个波长附近有最大吸收( )A.
240nm
B.
535nm
C.
280nm
D.
264nm
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】short conversations
【简答题】short conversations
【简答题】A．X线穿透性 B．X线荧光效应 C．X线摄影效应 D．X线电离效应 E．X线生物效应 X线照像的基础是( )
【单选题】关于x线量的叙述，正确的是
A.
X线量是指X线光子的穿透能力
B.
X线量是根据x线特性直接测量
C.
与靶面物质的原子序数Z成反比
D.
与给予X线管的电能成反比
E.
X线诊断范围内常用mAs表示
【单选题】short conversations
A.
It was better than expected
B.
It was a complete success
C.
It didn’t turn out as expected
D.
It was canceled
【单选题】Short Conversations
A.
He has to sit at the computer for half an hour.
B.
He will stop to enjoy a coffee break.
C.
He will finish his report soon.
D.
He cannot afford to have a coffee break.
【简答题】A．x线穿透性 B．x线荧光效应 C．x线摄影效应 D．x线电离效应 E．x线生物效应 x线照像的基础是( )
【单选题】Short Conversations .
A.
She can’t understand the man’s point of view .
B.
The man should earn the bread.
C.
The man is responsible for the family.
D.
She can’t agree more with the man.
相关题目：