有机磷农药对人体的主要毒性是()。A、血液凝固障碍  B、抑制胆碱脂酶活性  C、增

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问题:

有机磷农药对人体的主要毒性是()。

A、血液凝固障碍 

B、抑制胆碱脂酶活性 

C、增加乙酰胆碱的产生 

D、抑制中枢神经系统 

E、阻断M受体

考点:乡村医生乡村医生综合练习乡村医生综合练习题库
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从经度上看,中国、科威特、法国、英国四个国家从东往西的顺序是( )。

A.中国、科威特、英国、法国
B.科威特、中国、法国、英国
C.英国、法国、科威特、中国
D.中国、科威特、法国、英国

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被害人要求赔偿的物质损失必须是__________。

A.被告人的行为造成的

B.被告人的犯罪行为造成的

C.被告人的犯罪行为直接造成的

D.被告人的犯罪行为间接造成的

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某城镇污水处理厂辐流式沉淀池有效水深2.5m,超高0.3m,缓冲层高度0.4m,沉淀池底坡落差0.6m,污泥斗高度2.0m,则沉淀池总高为______m。

A.5.4
B.2.6
C.3.2
D.5.8

题型:单项选择题

下列哪些情况下,船舶被认为失去船级。()

A.船舶未按时交验而使证件过期或证件缺少

B.在发生海损事故后,未判明损坏性质和加以修复前改变了船舶的原有结构而未经船舶检验局的同意

C.船舶的技术状态恶化

D.附属品及装备恶化

E.原有船员辞职

题型:单项选择题

Audrey is a Chinese-American student. She has found many value(价值观) differences between Chinese and Americans.
About money
1) Americans would like to spend more than they have, so many of them are always in debt (欠债). Chinese usually spend less than they have, so many of them always have money left in the bank.
2) American kids love to make money by themselves. Chinese kids always ask their parents for money.
3) American parents think it is not useful to send their children to an expensive university. Chinese parents would do anything to send their children to good universities and that might make them very poor sometimes.
About school
1) Many American girls take part in sports, dancing and singing groups while Chinese girls take part in academic groups.
2) Some American students think that "B" is a gift while Chinese students think that "B" is terrible.
American parents and Chinese parents
American parents allow their daughters or sons to go out to have some part-time jobs in their free time or at the weekends. Chinese parents usually don’t allow their children to do so in middle or high schools.

The best title for the passage would probably be ______.

A.Differences between Chinese and Americans

B.Chinese Students and American Students

C.Chinese Parents and American Parents

D.Chinese Values and American Values

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