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【判断题】
古今汉语词汇的继承性,主要体现在基本词汇的稳定上。A.
正确
B.
错误
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【单选题】/20140249在Excel中,设单元格C1中输入公式“=ROUND(653.54897,2)”,按回车键后,C1单元格中的值为_(49)_。
A.
0.54
B.
65.0
C.
653.54
D.
653.55
【单选题】Which of the following statements is/are true regarding hydraulic pumps in general?
A.
Variable volumes can be obtained with gear pumps only by variation of the pump drive speed.
B.
A radial piston pump houses sliding pistons in a stationary cylinder block through which passes a rotating pintle or ported shaft
C.
The amount of fluid displaced per revolution of an axial piston rotary pump is dependent on the angle formed between the cylinder block and valve plate
D.
All of the above
【单选题】Which of the following statements is/are true regarding hydraulic pumps in general?
A.
Variable volumes can be obtained with gear pumps only by variation of the pump drive speed.
B.
A radial piston pump houses sliding pistons in a stationary cylinder block through which passes a rotating pintle or ported shaft.
C.
The amount of fluid displaced per revolution of an axial piston rotary pump is dependent on the angle formed between the cylinder block and valve plate.
D.
All of the other alternatives
【单选题】20140249在Excel中,设单元格C1中输入公式“=ROUND(653.54897,2)”,按回车键后,C1单元格中的值为_(49)_。
A.
0.54
B.
65
C.
653.54
D.
653.55
【单选题】在Excel中,设单元格C1中输入公式“=ROUND(653.54897,2)”,按回车键后,C1单元格中的值为_(49)_。
A.
0.54
B.
65.0
C.
653.54
D.
653.55
【单选题】Which of the four classes of ATP-powered pumps share overall similarity: several subunits, the same general organization, and a similar function in being H+ transporters?
A.
ABC superfamily and P-class pumps
B.
ABC superfamily and P-class pump
C.
F-class pumps and P-class pumps
D.
F-class pumps and V-class pumps
【单选题】在Excel中，设单元格F1的值为56.323，若在单元格F2中输入公式“=TEXT（F1,”￥0.00”)”，则单元格F2值为（）。
A.
￥56
B.
￥56.323
C.
￥56.32
D.
￥56.00
【简答题】In general, pumps can be classified as or .
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