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【单选题】
在以下基团或分子中,不能产生 k 吸收带的是( )
A.
C=C—C=C
B.
C=C—C=O
C.
C≡C—C=O
D.
CH 3 COCH 3
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【简答题】The first bullet 'train designed and manufactured in China with a speed of 300 kilometers per hour roiled off the production line on Saturday morning. The train was the latest model in the country' s ...
【单选题】(Those) of us who move (during) the term should have (their) addresses (changed) at the teacher's office.
A.
Those
B.
during
C.
their
D.
changed
【单选题】对现金折扣的表述正确的是()。
A.
现金折扣又叫商业折扣
B.
折扣率越低,企业付出的代价越高
C.
目的是为了加快账款的收回
D.
为了增加利润,应当取消现金折扣
【单选题】对现金折扣的表述正确的是 ( ) 。
A.
现金折扣又叫商业折扣
B.
折扣率越低,企业付出的代价越大
C.
目的是为了加快账款的收回
D.
为了增加利润,应当取消现金折扣
【简答题】The idea of a high speed train in France was born about 20 years before the first TGVs started working.
【单选题】According to the first paragraph the highest allowed speed of a car is to be determined by______.
A.
the accelerator
B.
GPS
C.
a digital map
D.
the driver
【单选题】During the night a person's temperature may drop one or two degrees, and it can be difficult to ______ him in the morning if his body hasn't become hot yet.
A.
arise
B.
arouse
C.
raise
D.
rise
【单选题】废水的混凝沉淀只要是为了( )
A.
调节pH
B.
去除胶体物质和细微悬浮物
C.
去除有机物
D.
去除较大颗粒的悬浮物,是水变清
【多选题】关于口服铁剂治疗的护理指导,下列那些是正确的
A.
从小剂量开始,饭后服用
B.
不宜与茶同服
C.
可加服维生素C
D.
遵医嘱定期复查血象
E.
为保护胃黏膜宜与牛奶同服
【简答题】仿照例句用所给的词汇造句。 例:war, go on, during all those years War was going on during all those years. A. a cold rain, drizzle down, all day yesterday B. the whole night, the wind, howl like mad C. in all those ...
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