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【单选题】
已知△ABC的三内角A，B，C成等差数列，则tan（A+C）=（ ）A.
3 3
B.
- 3 3
C.
- 3
D.
3
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举一反三
【简答题】According to the passage，special labor laws protecting women workers tend generally to have which of the following effects?
【单选题】在javascript中,下列关于window对象的说法错误的是()
A.
window对象包含history对象、location对象和document对象
B.
window.onload（）方法中的代码会在该页面加载完成后执行
C.
window.open（）方法用于在当前浏览器窗口加载指定的URL文档
D.
window.close（）方法用于关闭浏览器窗口
【简答题】哪个学派( )认为理存在于天地万物之中,"一草一木皆有理"。
【单选题】The main point of the passage is that special protective labor laws for women workers are______．
A.
unnecessary because most workers are well protected by existing labor laws
B.
harmful to the economic interests of women workers while offering them little or no actual protection
C.
not worth preserving even though they do represent a hardwon legacy of the 1abor movement
D.
controversial because male workers receive less protection than they require
【单选题】Which of the following did the conference also call for?
A.
Maintaining labor laws and welfare systems.
B.
Helping workers gain the skills that employers need.
C.
Allowing workers the freedom to choose jobs.
D.
Reforming labor laws and welfare systems.
【单选题】The United States Department of Labor (enforces) laws that (promote) the welfare of wage earners, (improving) occupational conditions and (advance) employment opportunities.
A.
enforces
B.
promote
C.
improving
D.
advance
【单选题】Health advocates believe that
A.
smoking laws should be roiled back.
B.
child-labor laws should be advocated.
C.
banning smoking hurts the economy.
D.
banning smoking cuts down health care budget.
【单选题】Which of the following fall(s) under the responsibilities of a project manager?
A.
. Labor relations with project personnel
B.
. Affirmative action
C.
. Personnel training
D.
. Discrimination and equal employment opportunity
E.
. All of the above
【多选题】若无法选择到满足热稳定要求的电气设备，采取的措施一般是【 】
A.
采用电抗器等限制短路电流
B.
采用快速继电保护装置
C.
重新设计电力系统接线 或电气主接线
D.
改进电气设备设计方案，重新制造电气设备
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