normal
norm
normally
All above.
第1题：
29． Why are green plants and grass helpful?
A． Because they can hold the water．
B． Because they can stop the wind from blowing the earth away．
C． Because they can keep the earth wet．
D．All the above．
第2题：
Sweat damage will occur in a cargo hold containing machinery parts when ______.
A.the outside air is colder than the cargo．
B.the air temperature of the hold is higher than the outside air temperature．
C.the dew point of the hold is higher than the temperature of the cargo．
D.the dew point of the outside air is lower than the temperature of the cargo
第3题：
It can be learned from the passage that about four billion years ago ______.
A. the earth was in molten state
B. the earth surface temperature was above 100℃
C. the earth surface temperature was below 100℃
D. rain water could remain on the earth
43．答案为B。根据第一段最后一句及第二段内容可知，雨水在地表温度降到水的沸点以下才能停在地表，由此可知大约在四十亿年前，地表温度应在沸点以上。
第4题：
（）on cargo lights.
第5题：
Cargo in hold No.2 is on（） .
第6题：
Sub-cooling is a method of reducing the temperature of the liquid refrigerant below its ______.
A.freezing point
B.floc point(浊点)
C.condensing temperature
D.compression temperature
第7题：
Should the steel be loaded in conditions where the ambient temperature is lower than might be encountered later on in the voyage，______．
A.the hold should be ventilated
B.the hold should not be ventilated
C.the hold should be half-ventilated
D.hot air should be introduced into the hold
第8题：
A.Particularly
B.Surprisingly
C.Normally
D.Obviously
第9题：
The bosun is greasing the （）. It is well greased.
第10题：
Timber can be stowed （）.