TB/T2340—2000标准规定,钢轨超声波探伤仪的动态范围抑制最大时为()。
参考答案:2~6dB
The pictures of the Loch Ness Monster show a remarkable resemblance to a plesiosaur, a large water reptile of the Mesozoic era presuming extinct for more than 70 million years.
A.supposed
B.presumably
C.presumptuous
D.is presumed
Why did regionalism become so popular in the U.S. during the Great Depression
A.Because the paintings sold very well.
B.Because it helped strengthen people’s faith in their country.
C.Because people liked to live in the country at that time.
D.Because it helped recover the economy.