盐酸的性质是[ ] A.有酸性,没有氧化性和还原性 B.有酸性和氧化性,没有还原

题型:选择题

问题:

盐酸的性质是[ ]

A.有酸性,没有氧化性和还原性

B.有酸性和氧化性,没有还原性

C.有酸性和还原性,没有氧化性

D.有氧化性和还原性,还有酸性

考点:氯的其他化合物(高氯酸、氯化物、氯酸盐,盐酸等)氧化剂、还原剂
题型:选择题

Once Effendi had a joke with the Prime Minister (宰相). He said that the Minister would die the next day. The next day, the Minister fell to the ground from the horse and really died. When the king learned this, he got angry and sent his men to catch Effendi at once.

When Effendi was brought to him, the king shouted angrily, “Effendi, since (既然)you knew when my Minister would die, you must know the date of your own death. Say it out, or you’ll die today.”

Effendi looked at the king for a while. Then he answered, “But how can I know? I’ll die two days earlier than you.” The king was afraid that if he killed Effendi, he himself would die after that. He thought he must keep Effendi alive (活着) as long as possible, so he let Effendi go.

小题1:This story tells us ________.

A.how Effendi fooled (愚弄) the king

B.when the king would die

C.why the Minister died

D.Effendi knew the dates of everyone’s death小题2:The Prime Minister died because ________.

A.Effendi killed him

B.Effendi said he would die

C.He was badly ill

D.He fell off the horse小题3: Why did the king ask Effendi to tell him the date of Effendi’s own death?

A.Because the king wanted to know when he himself would die.

B.Because the wanted to find an excuse to kill Effendi.

C.Because he himself had known the date of Effendi’s death.

D.Because he wanted to know when Effendi would die.小题4:The king let Effendi go because ________.

A.he hoped to live a long life

B.he was afraid of Effendi

C.he didn’t believe (相信) Effendi’s word

D.He knew he would die two days later小题5:Which of the following is not true?

A.Effendi played a joke on the Minister

B.Effendi didn’t know when the king would die.

C.The king was afraid of death.

D.If the king killed Effendi, he himself would die two days later.

题型:选择题

下列哪项对鉴别风寒犯肺证和风寒表证最有意义

A.咳嗽的轻重

B.口渴或不渴

C.是否发热恶寒

D.是否舌苔薄白

题型:选择题

A.IP过滤

B.线路过滤

C.应用层代理

D.计算机病毒检测

题型:选择题

男性,56岁,高血压、糖尿病病史3年,发作性胸前区剧烈疼痛4h,伴出汗、乏力入院,入院后检查BP140/80mmHg,HR90次/分,律齐,双肺底少量湿性啰音,ECG见V2~ V5ST段抬高弓背向上,诊断为急性心肌梗死,首选以下哪项治疗方案

A.静脉溶栓治疗
B.抗心绞痛、抗血小板治疗
C.低分子肝素+赛氯匹定+Aspirin
D.急性心肌梗死保守治疗

题型:选择题

在SQL中,可以用谓词Exists来测试一个集合是否( )。

A.有相同元组存在

B.为空集合

C.有相同分量存在

D.为非空集合

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