氯酸钾(KClO3)中氯元素的化合价为 A.﹣1 B.﹢3 C.﹢5 D.﹢7

题型:选择题

问题:

氯酸钾(KClO3)中氯元素的化合价为

A.﹣1

B.﹢3

C.﹢5

D.﹢7

考点:化学反应方程式的书写化学图标化学反应方程式的配平化学反应方程式的意义
题型:选择题

已知三角形ABC的一个顶点A(2,3),AB边上的高所在的直线方程为x-2y+3=0,角B的平分线所在的直线方程为x+y-4=0,求此三角形三边所在的直线方程.

题型:选择题

患者女,23岁。凹面型,面下1/3正常,前牙反,磨牙中性关系,上颌尖牙唇向高位,拥挤9mm。上下前牙唇倾度正常,下牙列无拥挤。侧位片测量显示上颌骨发育不足,ANB-2°。4个第三磨牙牙胚存在

治疗中可采取的辅助措施是()。

A.前牙平面导板

B.前牙斜面导板

C.后牙牙合垫

D.J钩

E.下颌舌弓

题型:选择题

有下列语句序列:
Y=”99.88”
X=VAL(Y)
&Y=X
执行以上语句序列之后,最后一条命令的显示结果是( )。

A.99.8

B..T.

C..F.

D.出错信息

题型:选择题

Current legislation that requires designated sections for smokers and nonsmokers on the premises of privately owned businesses is an intrusion into the private sector that cannot be justified. The fact that studies indicate that nonsmokers might be harmed by inhaling the smoke from others’ cigarettes is not the main issue. Rather, the main issue concerns the government’s violation of the right of private businesses to determine their own policies and rules.
Which one of the following is a principle that, if accepted, could enable the conclusion to be properly drawn

A.Government intrusion into the policies and rules of private businesses is justified only when individuals might be harmed.

B.The right of individuals to breathe safe air supersedes the right of businesses to be free from government intrusion.

C.The right of businesses to self-determination overrides whatever right or duty the government may have to protect the individual.

D.It is the duty of private businesses to protect employees from harm in the workplace.

E.(E) Where the rights of businesses and the duty of government conflict, the main issue is finding a successful compromise.

题型:选择题

羊毛的取向度和结晶度比蚕丝高。

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