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【单选题】
单选题:2、 十字轴式万向节的十字轴轴颈一般都是( )。A.
中空的
B.
实心的
C.
不确定
D.
答案A ，B，C均不正确
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皮皮学刷刷变学霸
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【简答题】rare/scarce (1) Human activities, to some degree, may destroy the living environment of wild life, especially _____ animals. (2) Vegetables were ________ last year, for there was a serious flood in th...
【单选题】Because of the flood, there are _________ tourists in that ancient town this year than last year.
A.
more
B.
most
C.
fewer
D.
fewest
【单选题】Which of the following is TRUE?
A.
People evacuated from their homes can return now.
B.
Flood waters arc receding in all parts of the upper mid-western United States.
C.
Flooding is expected to continue for a few more days.
D.
There was a record snowfall last year.
【单选题】Because of the flood, there are _________ tourists in that ancient town this year than last year. A. more B. most C. fewer D. fewest
A.
more
B.
most
C.
fewer
D.
fewest
【简答题】Vegetables were ________ last year, for there was a serious flood in the summer.
【简答题】定义一个类Book 2.在类Book中，定义一个共有属性表示书的大小 3.在类Book中，定义一个私有属性表示书的类型 4.在主程序当中，访问共有成员和私有成员
【单选题】It is reported that the bridge ______ last year has been damaged in a terrible flood.
A.
having been completed
B.
to be completed
C.
completing
D.
completed
【单选题】(CH 3 ) 2 CHCO 2 Et 通过酯缩合反应可制备 , 所用试剂为 :
A.
C 2 H 5 ONa/EtOH
B.
CH 3 ONa/CH 3 OH
C.
NaOH/H 2 O
D.
Ph 3 CNa
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