施涂涂料时流坠是由于().
A.施涂是蘸料过少
B.涂料施涂过薄
C.施涂时用力过重
D.涂料施涂太厚
参考答案:D
--- She will finish the project within three days!
--- ______! I could do it in three hours.
A.You are right
B.I’m stuck
C.Oh, come on
D.Don’t mention it
夏天,人们常常会在河边看到“蜻蜓点水”的现象,你知道那些蜻蜓在进行什么活动
( )
A.喝水
B.产卵
C.练习飞行
D.捉河里的小动物