打桩应选用的顺序是()
A.逐个打设
B.逐排打设
C.自中间向两侧对称打设
D.自中间向四周打设
E.自四周向中间打设
参考答案:B, C, D
--Do you know when the Chinese custom_________ from?
--It's hard to say. But its characteristics__________ the Tang Period.
A.began; prove
B.started; show
C.dates; suggest
D.is; appear
急性心肌梗死时明显增高的酶是()
A.丙氨酸氨基转移酶(ALT)
B.碱性磷酸酶(ALP)
C.天门冬氨酸氨基转移酶(AST)
D.γ-谷氨酰转移酶(γ-GT)
E.淀粉酶(AMS)