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【判断题】
行进间做后转身时要以前脚为中枢脚,用后脚蹬地。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【单选题】实验室常用的弹簧秤如图甲所示,弹簧的一端与连接有挂钩的拉杆相连,另一端固定在外壳上的O点,外壳上固定一个圆环,整个外壳重为G,弹簧和拉杆的质量忽略不计。现将该弹簧秤以如图乙和丙的两种方式固定在地面上,并分别用同样的力F0(F0>G)竖直向上拉弹簧秤,则稳定后弹簧秤的读数分别为( )
A.
乙图读数为F0﹣G,丙图读数为F0+G
B.
乙图读数为F0+G,丙图读数为F0﹣G
C.
乙图读数为F0,丙图读数为F0﹣G
D.
乙图读数为F0﹣G,丙图读数为F0
【单选题】What a wonderful time we are having. It is a bestholiday I ______ before.
A.
． was having
B.
． have
C.
． have ever had
D.
． had ever had
【单选题】______ we are having these days!
A.
What a lovely weather
B.
What lovely weathers
C.
What lovely weather
D.
What lovely a weather
【多选题】下列有关消防管道工程常用连接方式的说法，正确的有（ ）。
A.
采用螺纹连接时，热浸镀锌钢管的管件宜采用锻制承插焊和螺纹管件
B.
宜采用密封胶带作为螺纹接口的密封，密封带应在外螺纹上施加
C.
法兰连接是管道工程中最重要且应用最广泛的连接方式
D.
法兰连接按法兰与管子的固定方式分为螺纹法兰、焊接法兰、松套法兰等
E.
消防上多用到铸铁管的承插连接，铸铁管的承插连接方式分为机械式接口和非机械式接口
【简答题】简述物流企业绩效评价的基本原则
【单选题】—_____ class are you having?—We are having an English class.
A.
Which
B.
What
C.
When
【单选题】— Where shall we go this weekend? — ________ .
A.
What is having a drive to the country
B.
How is to take a drive to the country
C.
What about having a drive to the country
D.
We’re having a drive to the county
【单选题】----“What a terrible rain we are having!” ----“Yes. We are asked to pay more attention to the information about the rain ______ flood.”
A.
as well as
B.
so long as
C.
because of
D.
in case of
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