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【多选题】
 挤压系统主要由( )结构组成
A.
螺杆
B.
控制面板
C.
机筒
D.
分流板
E.
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皮皮学刷刷变学霸
举一反三
【单选题】支气管哮喘急性发作首选治疗药物?
A.
β2受体兴奋剂
B.
茶碱类药物
C.
抗胆碱能药物
D.
糖皮质激素
E.
色甘酸钠
【单选题】关于佛罗伦萨画派,下列说法不正确的是()。
A.
意大利文艺复兴时代形成的美术流派
B.
马萨乔是该派的代表人物
C.
起源于意大利威尼斯
D.
侧重表现宗教题材
【简答题】D Antarctica is the southernmost place on Earth, and it is larger than the United Sates and 95% of it is covered with ice. The ice is 5 kilometers thick at places and it never melts. At least that is ...
【单选题】Colleges in the (newly formed) United Sates, (in recovering), from the adverse effects of the American Revolution, inaugurated (a broad curriculum) (in response of) social demands.
A.
newly formed
B.
in recovering
C.
a broad curriculum
D.
in response of
【简答题】The four major regions of the United Sates are___________________ ________ _____________.
【单选题】The United Sates ranks______ in the export of rice in the world.
A.
the first
B.
the second
C.
the third
D.
the fourth
【简答题】已知某高级酒店的管廊内设置DN100承插塑料排水管,水平长度为200m,采用零件粘接方式,查2014计价定额,求得该排水管道的清单项目的综合单价。
【单选题】In the United Sates, the passport is valid for 10 years for people under 18.
A.
Y
B.
N
C.
NG
【多选题】用孔板流量计测量某管道中水的流量。已知水的密度为1000kg/m^3,粘度为0.001Pas,管道内径为0.045m,孔板的孔径为0.035m。水银压差计的读数为0.1m。下列关于孔板流量计的选项,哪些正确?
A.
根据m值等于0.6,查得C0不变时的数值为0.74。故先假设C0等于0.74,后面再校正。
B.
代入流量计算公式,得到体积流量等于0.00354m^3/s。管道的平均流速为2.23m/s
C.
管道Re=1.0×10^5。查得C0等于0.75
D.
由于C0的相对误差约为1%,如果做严格计算,需要重新以0.75计算,如果认可这一相对误差,可以认为假设正确。
【简答题】For Chinese wanting to work as nurses in the United Sates, the arrival of the test of the Commission on Graduates of Foreign Nursing Schools (CGFNS) may be a welcome move. The CGFNS has a certificatio...
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