Which of the following is NOT true?
A. Americans often answer with the words like “sure”,“yeah”.
B. They are not impolite with brief replies.
C. Americans in high ranks must use formal words in greeting:
D. Americans are a warm but informal people.
第1题
A.1
B.2
C.3
D.错误
第2题
The water level in a steaming auxiliary boiler will always _____.
A.rise when the steam pressure is increased
B.remain constant as long as the feed pump operates
C.fall when the steam pressure is decreased
D.vary as the steam demand changes
第3题
Water always ______ steam when boiled.
A.gives out
B.gives up
C.gives off
D.gives in
第4题
_____ there is smoke, there is fire.
A: If
B; When
C; Where
第5题
Water always ______ steam when boiled.
A.gives out
B.gives up
C.gives off
D.gives in
第6题
Water always ______steam when boiled.
A.gives out
B.gives up
C.gives off
D.gives in
第7题
A.extremely
B.so
C.very
D.even
第8题
When steam is being raised on a boiler, the water level will normally _____.
A.drop as the boiler warms up
B.rise as the boiler warms up
C.remain unchanged until the boiler is hot enough
D.rise and fall with the steam demand
第9题
When a hurricane is about to occur, the National Weather Bureau issues a warning.
A.adjacent
B.gigantic
C.perilous
D.imminent
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