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【单选题】
大型花键轴键磨损,可进行镀铬或 ,然后再加工到规定尺寸的方法不定期修复。A.
堆焊
B.
更换
C.
修配
D.
镀锏
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举一反三
【单选题】What is true about the apartments Mies built on Chicago s Lake Shore Drive?
A.
They ignored details and proportions.
B.
They were built with materials popular at that time.
C.
They were more spacious than neighboring buildings.
D.
They shared some characteristics of abstract art.
【单选题】What is true about the apartments Mies building Chicago's Lake Shore Drive?
A.
They ignored details and proportions.
B.
They were built with materials popular at that time.
C.
They were more spacious than neighboring buildings.
D.
They shared some characteristics of abstract art.
【单选题】下列各组分子中,中心原子均发生 sp 杂化,分子空间构型均为直线形的是( )。
A.
H 2 S、CO 2
B.
CS 2 、SO 2
C.
HgCl 2 、CS 2
D.
H 2 O、HgCl 2
【单选题】What can we infer from the first two paragraphs?
A.
Chicago's antiloitering law shouldn't be struck down.
B.
The cop was entitled to send the gangs away.
C.
Chicago officials yielded to the result of striking down the law.
D.
Antiloitering Law in Chicago was much too severe for the majority.
【简答题】CS 2 分子空间构型是直线形, C原子以2个sp杂化轨道分别和2个硫原子形成共价键。CS 2 分子是 分子; Cl 2 O分子的空间构型是V形,O原子以2个 杂化轨道分别和 2个Cl原子形成共价键。Cl 2 O分子是 分子。
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