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【单选题】
已知 u = 20sin (ω t + 120 °) V , i = 4cos (ω t+20 °) A ,则( ) A 、 B 、A.
u 超前 i 100 0
B.
u 超前 i 10 0
C.
u 超前 i 190 0
D.
以上都不对
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举一反三
【单选题】How does the mother react when she sees Gregor?
A.
She laughs until she cries.
B.
She hits him with a newspaper.
C.
She passes out.
D.
She runs away in fear.
【多选题】1922年团的一大通过的纲领指出共青团成立的目的是_?
A.
改良青年工人农人生活状况
B.
为青年妇女青年学生的利益而奋斗
C.
养成青年的革命精神
D.
发展社会经济
【多选题】How does the mother feel when her daughter is leaving?
A.
The mother is happy that her daughter is independent now.
B.
The mother feels relieved from the responsibilities.
C.
On the other hand, she feels doubtful whether her daughter could take good care of herself.
D.
The mother does not want her daughter to leave.
【单选题】特尔斐法（专家调查法），是拟定调查提纲，征询专家意见，在综合、归纳有关专家的意见之后再反馈给专家，并由此提出新的论断。特尔斐法属于投资项目评估的（）。
A.
定性分析
B.
定量分析
C.
质量分析
D.
其他
【单选题】How does the mother communicate with the writer ?
A.
She would call him through the Internet.
B.
She would twitter him often.
C.
She would follow his updating news on the web.
D.
She would talk to the father first in Louisiana.
【单选题】对权重确定的方法中的因素成对比较法描述不正确的是( )。
A.
将因素两两之间都进行比较
B.
某一因素权重有可能是零
C.
为使结果更准确，可结合特尔斐测定法
D.
可在因素集合中设置一虚拟目标
【单选题】How does the mother feel towards her daughter’s leaving home?
A.
Glad, relaxed, satisfied, worried.
B.
Glad, sad, frustrated, worried.
C.
Glad, sad, frightened, worried.
D.
Glad, sad, disappointed, worried.
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