A、The/ the
B、An/ the
C、An/ a
D、…/ ...
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:
设计不规则元件体时,通过什么操作实现?()
A.Place-->line
B.Place-->wire
C.Place-->Bus
D.Place-->Netlable
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:
用vi打开一个文件,如何用字母”new”来代替文件中所有的字母”old”
A.:r/old/new
B.:s/old/new
C.:1,$s/old/new/g
D.:%s/old/new/g