【判断题】【消耗次数：1】
塔机工作时，承载钢丝绳的实际直径不应小于6mm().
①
正确
②
错误
参考答案：
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相关题目
【单选题】
吊索钢丝绳端部采用编结固接时，编结部分的长度不得小于钢丝绳直径的（），并不应小于（）。
①
10倍，200mm
②
20倍，300mm
③
10倍，300mm
④
20倍，200mm
【多选题】
钢丝绳出现下列哪些情况时必须报废和更新？（ ）;
①
钢丝绳断丝现象严重
②
断丝的局部聚集
③
当钢丝绳磨损或锈蚀严重，钢丝绳的直径相对于公称直径减少7%或更多时既使未发现断丝
④
钢丝绳失去正常状态，产生严重变形时
⑤
绳芯挤出
【多选题】
吊装钢丝绳断裂的主要原因有（）
①
A吊装角度太大，导致吊装绳抗拉强度超过极限值
②
B钢丝绳品种规格选用不当
③
C使用已达到报废标准的钢丝绳捆绑吊装物件
④
D吊装绳和物件之间的接触处无垫衬，造成棱角割断吊装绳
随机题目
【单选题】
4.____the diamond, he had to look for a place to hide it.
①
Having stolen
②
Having been stolen
③
Stolen
④
Stealing
【单选题】
12.You can’t imagine what great trouble they have ____the problem____.
①
to solve; being talked about
②
solving; discussing
③
to solve; to talk about
④
solving; being discussed
【单选题】
6.And there, almost____in the big chair, sat her little brother, who never had to be told to keep quiet.
①
having lost
②
losing
③
to be lost
④
lost
【单选题】
17.____, the subject was always in my mind.
①
Walking or sleeping
②
Walking or slept
③
Having walked or slept
④
To walk and sleep
【单选题】
20. The joke told by Tom made us_____, so our maths teacher couldn’t make himself _____.
①
to laugh; hearing
②
laughing, heard
③
laughing; hear
④
laughed; heard
【单选题】
15.The program was so exciting that the children kept their eyes ____on the screen.
①
to fix
②
to be fixed
③
fixed
④
fixing
【单选题】
10.In January, 2004, the United States successfully launched “spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind.
①
it marked
②
marking
③
marked
④
to mark
【单选题】
19. When he came to, he found himself _____ on a chair, with his hands _____ back.
①
to sit; tying
②
sitting; tying
③
seating; tied
④
seated; tied
【单选题】
13.The monument(里程碑) was built in honor of the explorer who was believed ____the river.
①
to have discovered
②
to have been discovered
③
to discover
④
having been discovered
【单选题】
2. — Have you considered _____ your job as a teacher? —Yes. I like the job because a teacher is often considered _____ a gardener.
①
to change; to be
②
to change; being
③
changing; being
④
changing; to be