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【单选题】
典型霍乱腹泻的临床特点为:
A.
剧烈腹痛和腹泻
B.
腹泻伴里急后重
C.
无腹痛性剧烈腹泻
D.
发热伴腹泻
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举一反三
【单选题】—What are Mary and Joe doing? —They ____ newspapers. [     ]
A.
read
B.
reading
C.
are reading
D.
to read
【单选题】以总体各单位数值之和除以总体单位总数,所得就是()。
A.
算术平均数
B.
加权平均数
C.
几何平均数
D.
总体标准差
【判断题】( )代料栽培适合食用菌生长的含水量通常是在60%~65%左右。
A.
正确
B.
错误
【单选题】用总体中各单位某一数量标志值之和除以总体单位总数,这是()。
A.
算术平均数
B.
调和平均数
C.
几何平均数
D.
中位数
【单选题】As she______the newspaper, Granny______asleep.
A.
read.., was falling
B.
was reading.., was falling
C.
read...fell
D.
was reading.., fell
【单选题】Mary has so many interesting books________. [     ]
A.
read
B.
reads
C.
to read
【判断题】平均数:总体各单位数值之和除以总体各单位数目所得之商。
A.
正确
B.
错误
【单选题】以总体各单位数值之和除以总体单位总数的商,即是______
A.
算术平均数
B.
众数
C.
中位数
D.
加权平均数
【简答题】The library is open every day except Sunday from half past eight in the morning till five in the afternoon.
【简答题】Fill in each blank with the noun of the adjective as given in the first sentence. The library is a completely silent place. The library is a place of complete _____.
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