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【判断题】
适当提高齿面硬度，可以有效地防止或减缓齿面点蚀，齿面磨损，齿面胶合和轮齿折断等失效A.
正确
B.
错误
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举一反三
【简答题】在进行电气设备 与 操作时,必须严格遵守各种 和规定,不得 。
【单选题】下列关于证券自营业务的认识不正确的是( )。
A.
证券公司以自有资金或者依法筹集的资金买卖证券
B.
不以盈利为目的
C.
有利于活跃证券市场、维护交易的连续性
D.
容易存在操纵市场和内幕交易等不正当行为
【判断题】如下图所示的直流电路,已知E1=15V,E2=70V,E3=5V,R1=60Ω,R2=5Ω,R3=10Ω,R4=2.5Ω,R5=15Ω则支电路电流I5为2A。( )
A.
正确
B.
错误
【单选题】一般技术状况良好的铅蓄电池,单格电压应在1.5V以上,并在五秒内保持稳定。若5秒内下降至1.7V,说明蓄电池( )
A.
放电量约50%额定容量
B.
放电量约25%额定容量
C.
存电量充足
D.
单格电池有故障
【单选题】In 1943, when I was 4, my parents moved from Coeur d’Alene, Idaho, to Fairbanks, Alaska, where adventure was never far away. We arrived in the summer, just in time to enjoy the midnight sun. All that ...
A.
To look back on his childhood with adventures.
B.
To describe the extreme weather of Alaska.
C.
To express how much he misses Leonhard.
D.
To show off his pride in making trouble.
【单选题】In England, the last name is the_____.
A.
family name
B.
middle
C.
given name
D.
full name
【单选题】In 1943, when I was 4, my parents moved from Coeur d’Alene, Idaho, to Fairbanks, Alaska, where adventure was never far away. We arrived in the summer, just in time to enjoy the midnight sun. All that ...
A.
His father was a cruel man.
B.
His parents didn’t love him.
C.
His parents used to be very busy.
D.
His mother didn’t have any jobs.
【单选题】习近平新时代中国特色社会主义思想明确全面推进依法治国总目标是()。
A.
构建有法可依、有法必依、执法必严、违法必究的法治体系
B.
构建科学立法、严格执法、公正司法、全民守法的法治体系
C.
建设中国特色社会主义法治体系、建设社会主义法治国家
D.
法治国家、法治政府、法治社会建设相互促进
【单选题】In England, the last name is the ______.
A.
family name
B.
middle name
C.
given name
D.
full name
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