一般情况下,盲板直径Ф1000mm的盲板,厚度宜选8mm。
参考答案:对
38. --- What are you going to do tomorrow?
--- I will go _____ with my friends on the lake.
A.hunting
B.shopping
C.shipping
D.Boating
小麦成熟期可以分为乳熟期、()期和()期。