《交通工具卫生证书》用于飞机、汽车的有效期为( )。
A.3个月
B.6个月
C.9个月
D.12个月
参考答案:B
给句子重新排序,组成一段话。
A. First, we make a big ball of snow.
B. Can you make a snowman?
C. Put the small ball on the big ball.
D. Sure.
E. Then make another small snowball.
F. Carrot for his nose.
G. Let's make a face.
H. Some rocks for his mouth and eyes. Two sticks for his arms.
正确的顺序是: ____________________________________________________
下列关于手捻试验叙述正确的是()
A、手感滑腻,无砂,捻面光滑者为塑性高
B、稍有滑腻感,有砂粒,捻面稍有光泽者为塑性中等
C、稍有粘性,砂感强,捻面粗糙者为塑性低
D、上述说法均不正确