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【单选题】
有些植物自茎基部产生一些不定根伸入土中,以增强支撑茎干的力量属于( )。
A.
支持根
B.
寄生根
C.
气生根
D.
攀援根
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【简答题】在一组数据按一定顺序排序后,处于中间位置上的数值是( )。
【多选题】EDI通信网有两种形式,分别是( )。
A.
直接网络
B.
间接网络
C.
增值网络
D.
安全网络
【单选题】老年人的服务完善度不包括()。
A.
照片服务体系
B.
健康服务普及 C长效助老服务 D短期服务设施
【单选题】A discount of 1 percent is offered for payment within 30 days, and 0.5 percent for payment within 60 days.
A.
If customers pay within 30 days, they will save more money.
B.
The company does not permit a discount for payment within 50 days.
C.
Customers will not save any money by paying immediately after purchasing.
【单选题】It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.
A.
34. It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______. A.had wiped out
B.
have wiped out
C.
had been wiped out
D.
have been wiped out
【简答题】A. 10 percent to 25 percent for the proportion of workers who use drugs occasionally on the job B. determine exactly when drug use becomes abuse C. the 1920s until the 1960s D. the 1960s until ...
【单选题】In a sample of patients at an animal hospital, 30 percent are cats and 60 percent are not dogs. What fraction of those patients who are not cats are dogs?
A.
B.
C.
D.
【单选题】老年人的服务完善度不包括()。
A.
照片服务体系
B.
健康服务普及
C.
长效助老服务
D.
短期服务设施
【单选题】( ) 在一组数据中的数值排序中处于中间的位置,人们由它可以对事物的大体进行判断和掌控,它虽然不受极端数据的影响,但可靠性比较差,所以它只是表示这组数据的一般情况。
A.
平均数
B.
中位数
C.
众数
【简答题】A.30 percent. B.45 percent. C.50 percent. D.75 percent.
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