T形梁焊后易产生拱曲变形,若进行火焰矫正则应采用______。
A.三角形加热
B.加热立板
C.线状加热
D.加热水平板
E.点状加热
参考答案:A,B
缺词填空。
I am a student at sunshine school and I am in Grade 8. My favourite s__1__ are PE and Science. I am very interested in p__2__ volleyball. Every Monday and Friday, I play volleyball w__3__ my classmates. I also like singing and dancing.
I would like to become a b__4__ because I like birds and nature very much. I think it is i__5__ for me to do something to p__6__birds. I want to know m__7__ about birds, too. I can come to club activities
f__8__ 4 p.m. to 5 p.m. on Sundays.
I will be very happy i__9__I can become a m__10 _ of your club.
心衰时使用利尿药一般首选( )
A.氨苯喋啶B.螺内酯C.呋塞米D.布美他尼E.噻嗪类利尿药