A、emission
B、emit
C、radiation
D、evaporation
第1题:
I ()have been here, but I()not find the time.
A. could; could
B. might; could
C. should; could
D. should; would
第2题:
Damage to cargo caused by fumes or vapors from liquids,gases,or solids is known as ______.
A.contamination
B.oxidation
C.tainting
D.vaporization
第3题:
第4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5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6题: