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【判断题】
失效是指一个设备、元件或组件的一种物理状态,在此状态下它们不能按照所要求的方式工作。
A.
正确
B.
错误
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【单选题】 彩色电视摄像机的宽容度通常为
A.
1:32
B.
1:128
C.
1:64
D.
1:16
【单选题】如图所示,此时游标卡尺的主尺读数是( )
A.
9mm
B.
10mm
C.
10.1mm
D.
9.4mm
【单选题】How did Elizabeth answer Lionel when he asked where was Mr. Johnson?
A.
she said he did not know here
B.
she said she did not know
C.
she said she did not know where he was
D.
she said he did not know her coming here
【单选题】Mr. Wang didn't tell us ______ in 2006. [     ]
A.
where he live
B.
where he lives
C.
where did he live
D.
where he lived
【单选题】盘用制动的闸片与制动盘之同的摩擦系数与( ) 的变化曲线基本近似
A.
列车运行阻力系数
B.
列车制动减速
C.
轮轨间黏着系数
D.
列车惰性规律
【单选题】列哪项不是聚酰胺-胺树状大分子合成原料( )
A.
B.
丙烯腈
C.
乙二胺
D.
丙烯酸甲酯
【单选题】Mr. Wang didn't tell us _______ ten years ago. [     ]
A.
where he worked
B.
where did he work
C.
where he works
D.
where does he work
【单选题】如图所示,此时游标卡尺的主尺读数是()
A.
2mm
B.
20mm
C.
26mm
D.
26.4mm
【单选题】---I can’t find Mr. Smith .Where did you meet him this morning ? ---It was in the hotel ______he stayed .
A.
that
B.
which
C.
the one
D.
where
【简答题】在《教师节,老师、阿姨在干什么》的主题教育活动中,教师创设了“看录象”的环境,通过这一环境让小班幼儿真切感受和了解到当自己在午睡时,老师正在为自己盖毯子;当自己在做游戏时,厨房阿姨正在汗流浃背地在烧饭......活动中老师的做法符合环境材料评价中的: A相宜性 B多样性 C启发性 D开放性
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