混凝土振捣后是否密实的判断方法是表面泛浆和外观均匀、混凝土()、混凝土不出气泡。
参考答案:不再下沉
– Bad luck! I failed again in the driving test.
– You are sure to succeed if you try _____ third time. What’s more, experiencing
failures can also be _____ pleasure.
A.the; a
B.the; /
C.a; a
D.a; /
脊柱裂最常见的形式是()
A.棘突、椎板缺如,好发于颈胸部
B.棘突、椎板缺如,好发于颈部
C.棘突、椎板缺如,好发于胸部
D.棘突、椎板缺如,好发于腰骶部
E.棘突、椎板缺如,好发于腰部