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【单选题】
制作卷筒蛋糕,卷筒时要尽量卷紧,卷好后 ( ),以免切块时糕卷松散。A.
马上切块
B.
要放置一会，再将纸去掉
C.
将纸去掉再切块
D.
先切块，再将纸去掉
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【单选题】A vessel is wind rode when it is ____
A.
at anchor and heading into the wind
B.
backing into the wind
C.
carrying lee anchor
D.
necessary to apply a leeway correction to the course
【单选题】A vessel is wind rode when it is ______.
A.
at anchor and heading into the wind
B.
backing into the wind
C.
carrying lee rudder
D.
necessary to apply a leeway correction to the course
【简答题】When the balloon is blown away by the wind, it will soon (appear) ______.
【单选题】下列对一些实验事实的理论解释正确的是 选项 实验事实 理论解释
A.
氮原子的第一电离能大于氧原子 氮原子2p能级半充满
B.
CO 2 为直线形分子 CO 2 分子中C—O是极性键
C.
金刚石的熔点低于石墨 金刚石是分子晶体，石墨是原子晶体
D.
HF的沸点高于HCl HF的相对分子质量小于HCl
【单选题】Mr. Smith is neighed (近视). One day he is walking in the street. A strong wind (强风) blows his cap off his head (头). Mr. Smith begins to mn after it. An old woman opens her window and speaks to him. 'He...
A.
It's red.
B.
It's white.
C.
It's black.
【单选题】下列对一些实验事实的理论解释正确的是（ ）
A.
实验事实：氮原子的第一电离能大于氧原子；理论解释：氮原子2p能级半充满
B.
实验事实：CO 2 为直线性分子；理论解释：CO 2 分子中C=O之间的夹角为180°
C.
实验事实：金刚石的熔点低于石墨；理论解释：金刚石是分子晶体，石墨是原子晶体
D.
实验事实：HF的沸点高于HCl；理论解释：HF的相对分子质量小于HCl
【单选题】In the Northern Hemisphere a wind is said to veer when the wind ______.
A.
changes direction clockwise, as from north to east, etc
B.
changes direction counterclockwise, as from south to east, etc
C.
changes direction violently and erratically
D.
remains constant in direction and speed
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