皮皮学，免费搜题
登录
搜题
【单选题】
下列化合物中的 MS 图中( M=156),丰度最大的碎片离子是( )A.
m/z 99
B.
m/z 141
C.
m/z 113
D.
m/z 57
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
【单选题】SO 2 和Cl 2 都有漂白作用，用SO 2 和Cl 2 的混合气体漂白有色的湿布条，则其漂白的能力……（ ）
A.
与SO 2 相同
B.
与Cl 2 相通
C.
减弱或消失
D.
增强
【单选题】Daming often runs _____ the morning, but _____ Sunday morning he doesn't. [ ]
A.
in; in
B.
in; on
C.
on; in
D.
on; on
【简答题】阅读对话，判断句子正(T)误(F)。 T: Good morning, class. Ss: Good morning, teacher. T: Is everyone here? S1: Mike isn't here. He is ill. T: I'm sorry to hear that. What's wrong with Mike? S1: His arms hurt. The doc...
【简答题】A．She isn't there in the morning. B．Her assistant isn't there in the morning. C．She won't have the forms he needs until the afternoon. D．She isn't too busy in the afternoon.
【简答题】循证医学产生的原因及意义?
【单选题】–Why were you late for school this morning? –I got up very early this morning, ________ I didn’t catch the first bus.
A.
and
B.
but
C.
or
D.
so
相关题目：
【单选题】SO 2 和Cl 2 都有漂白作用，用SO 2 和Cl 2 的混合气体漂白有色的湿布条，则其漂白的能力……（ ）
A.
与SO 2 相同
B.
与Cl 2 相通
C.
减弱或消失
D.
增强