检查椎间盘和脊髓的最佳方法是()
A.MRI
B.CT
C.ECT
D.X线平片
E.超声成像
参考答案:A
_____ the cake _____ five parts. We will share three of them and leave the rest to Jack. [ ]
A. Separate …from
B. Take …from
C. Divide … into
D. Divide …
当船舶有下列()情况时,必须向授权的CCS申请临时检验。
A.改变船舶证书所限定的用途或航区
B.船级证书或法定证书到期或失效
C.A或B对
D.A或B错