下列化合物中,酸性最强的是A.α-羟基葸醌 B.1,5-二羟基葸醌 C.2,6-二羟

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问题:

下列化合物中,酸性最强的是

A.α-羟基葸醌

B.1,5-二羟基葸醌

C.2,6-二羟基葸醌

D.α-羟基蒽

E.1,2-二羟基葸醌

考点:医技考试放射技士基础知识初级放射医学技士基础知识5
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工作场所下列情况中的()时,应设置应急照明。

A.有危及航行安全的建筑物、构筑物上,应根据航行要求设置障碍照明

B.正常照明因故障熄灭后,需确保正常工作或活动继续进行的场所,应设置备用照明

C.正常照明因故障熄灭后,需确保人员安全疏散的出口和通道,应设置疏散照明

D.有警戒任务的场所,应根据警戒范围的要求设置警卫照明

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Fe2+离子的外层电子分布式,正确的是( )。

A.4s23d4
B.3d44s2
C.3d6
D.3s23p63d6

题型:单项选择题

建设工程项目质量控制系统涉及的工程范围,一般根据项目的定义或工程承包合同来确定。错误的是( )。

A.建设工程项目范围内的全部工程

B.建设工程项目范围内的某一单项工程

C.建设工程项目范围内的分部分项工程

D.建设工程项目某单项工程范围内的一个单位工程

题型:单项选择题

二级压缩机出口温度()

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A police officer in a small town stopped a motorist who was speeding down Main Street. "But officer," the man said, "I can explain." "Just be quiet!" snapped the officer. "Or I’m going to let you cool off in jail until the chief gets back." "But officer, I just wanted to say... " "And I said KEEP QUIET! Now you’re going to jail!" A few hours later, the officer checked up on his prisoner and said," Lucky for you the chief is at his daughter’s wedding. He’ll be in a great mood when he gets here. " "Don’t count on it," said the prisoner. "I’m the groom; he is my father-in-law. \

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