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【单选题】
阅读如下程序框图,运行相应的程序,则程序运行后输出的结果为(   )
A.
7
B.
9
C.
10
D.
11
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参考答案:
举一反三
【简答题】Plastic and traces of hazardous chemicals have been found in Antarctica, one of the world’s last great wildernesses, according to a new study. Researchers spent three months taking water and snow samp...
【单选题】下列选项中,不属于锉削工艺的是( )
A.
平面锉削
B.
圆弧面锉削
C.
螺旋面锉削
D.
沟槽锉削
【多选题】对沉井下沉的施工要点的叙述中,正确的是( )。
A.
沉井下沉时,可使用爆破方法
B.
沉井下沉施工有排水除土和不排水除土两种方法
C.
沉井预制完成并准确就位后,开始抽除垫木
D.
井底下沉至设计标高2.0m以上时,应放慢下沉速度
E.
正常下沉时,应自刃脚处向中间均匀对称除土
【单选题】To label their produce as organic, farmers have to obtain a certificate showing that no ________ chemicals have been used to kill pests on the farm for two years.
A.
toxic
B.
tragic
C.
nominal
D.
notorious
【单选题】These chemicals have been found to cause serious environmental______.
A.
dam
B.
damage
【单选题】To lable their product as organic ,famers have to obtain a certificate showing that no ______chemicals have been used to kill pests on the farm for two years.
A.
tragic
B.
toxic
C.
notorious
D.
nominal
【单选题】关于以下程序段,下面的说法正确的是________。
A.
执行程序段后,输入a或者b,都将输出Good!
B.
执行程序段后,输入A或者B或者C,都将输出Good!
C.
执行程序段后,输入E,将输出Bad!,然后结束
D.
执行程序段后,输入C,将输出 Error!
【简答题】These chemicals have been found to cause serious environmental ________.
【单选题】The roots of plants()chemicals that have been absorbed and turn them into food for the plants.
A.
break out
B.
break into
C.
break down
【多选题】对沉井下沉的施工要点的叙述中,正确的是( )。
A.
沉井下沉时,可使用爆破方法
B.
沉井下沉施工有排水除土和不排水除士两种方法
C.
沉井预制完成并准确就位后,开始抽除垫木
D.
井底下沉至设计标高2.0m以上时,应放慢下沉速度
E.
正常下沉时,应自刃脚处向中间均匀对称除土
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