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【单选题】
发生在管道转弯处、管径突变处的水头损失称为( )
A.
沿程水头损失
B.
局部水头损失
C.
总水头损失
D.
都不对
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【单选题】下面哪种媒体形式属于新媒体?
A.
广播
B.
杂志
C.
电视
D.
微信
【简答题】吸烟有害健康!你知道吗?被动吸烟也大大危害着人类健康.为此联合国规定每年的5月31日为“世界无烟日”.为配合“世界无烟日”宣传活动,自2009年5月起小明和同学们每年都在学校所在地区开展戒烟宣传活动,今年以“我支持的戒烟方式”为主题的问卷调查活动征求市民意见,并将调查结果分析整理制成了如下统计图: 根据统计图解答: (1)请根据以上信息,把两幅统计图补充完整; (2)如果该地区有2万人,那么请你根...
【单选题】The Summer Palace is really beautiful. In fact, I doubt whether China has _________ park.
A.
a more beautiful
B.
a most beautiful
C.
the most beautiful
D.
a beautiful
【单选题】A In China,more and more middle school students are getting shorter sleeping time than be-fore. Most students sleep less than nine hours every night,because they have much homework to do. Some homewor...
A.
Watching TV.
B.
Playing computer games.
C.
Doing their homework.
D.
Doing housework.
【单选题】Food safety is paid much more attention these years. ________ that more rules should be made in China.
A.
It's reported
B.
It's believed
C.
It's finished
D.
it's decided
【判断题】在HTML表格中,表格的列数等于任意一行中th与td的个数。
A.
正确
B.
错误
【单选题】下面哪种媒体形式属于新媒体?
A.
微博、微信
B.
广播、电视
C.
报纸、杂志
D.
LED、数字广告
【判断题】In China, people, especially women, do not like to be tanned at all. We think fair skin is more beautiful, so skin whitening creams are extremely popular in China and in sunny days the anti-UV umbrell...
A.
正确
B.
错误
【判断题】若平面汇交力系的各力矢作用线都平行于x轴,则该力系只需满足一个平衡方程∑Fix = 0,力系即平衡。
A.
正确
B.
错误
【单选题】()是推动犯罪人实施犯罪行为的内在原因或动力因素。
A.
犯罪动机
B.
犯罪心理
C.
犯罪方法
D.
犯罪目标
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