16.
A. can
B. used to
C. may
D. should
第1题:
________ the vessel have no safety radiotelegraphy certificate at the time of her delivery,she ________ be held to be unseaworthy.
A.If/may
B.Will/shall
C.Should/would
D.Would/should
第2题:
第3题:
1、CAN总线的基本颜色是()色;CAN-Low总是()色。
A.黑
B.橙
C.蓝
D.棕
第4题:
______ it rain tomorrow moring, the loading ______.
A.Should / will be postponed
B.If / shall be postponed
C.Should / would be postponed
D.If / has to be postponed
第5题:
第6题:
3、目的状语从句中常含有can, could, may, might, should等情态动词。