对于隧道超欠挖的检测，关键是要准确地测出隧道开挖的（ ）

依据交通运输部标准JT/T 329—2010：预应力钢绞线的扁锚张拉端锚具，钢绞线直径为15.2mm，锚固根数...

单项选择题依据交通运输部标准JT/T 329—2010：预应力钢绞线的扁锚张拉端锚具，钢绞线直径为15.2mm，锚固根数为7根，下列标记正确的是（）

Cats are creatures of habit.They like to go to sleep ab...

单项选择题Cats are creatures of habit.They like to go to sleep about the same time every day and for a certain length of time.They seem to have a natural clock inside them that tells them when to sleep.
Cats increase their regular sleep with occasional cat naps（打盹）.Some experts feel that humans could also benefit from this habit.Cat naps help to build up energy in the body.They are also a good way to get rid of trouble!Since cats have the same moods（情绪）as humans,some experts behave that people can improve their moods.People might become happier.
A number of famous people have copied cats by taking cat naps during the day.The naps would usually last from 15 to 30 minutes.
Winston Churchill took cat naps.So did Presidents Harry Truman,John F.Kennedy and Lyndon B.Johnson.These famous men were known for their energy.They were also able to work long hours,often into the night.Napping was their secret.
Perhaps more people learn from cats and take naps to feel better and live longer!
Which of the following statements is NOT true?

混凝土每罐需加入干砂190kg，若砂子含水率为5％，则每罐需加入湿砂的量是( )。A.185kgB.190k...

单项选择题混凝土每罐需加入干砂190kg，若砂子含水率为5％，则每罐需加入湿砂的量是( )。