【简答题】根据三极管的结构,我们可以把三极管想象成( )个二极管同极相连而成。
【单选题】The poetry of John Donne represents a sharp break from the poetry of his predecessors in the Elizabethan ear. One of the outstanding features in his poetry is "conceit" which means_.
【单选题】The poetry of John Donne represents a sharp break from the poetry of his predecessors in the Elizabethen Era. One of the outstanding features in his poetry is "conceit" which means ____.
【单选题】圆电流外有一闭合回路,它们在同一平面内,ab是回路上的两点,如图所示,当圆电流I变化时,闭合回路上的感应电动势及a、b两点的电位差分别为:
A.
闭合回路上有感应电动势,但不能引入电势差的概念;
B.
闭合回路上有感应电动势, U a - U b > 0 ;
C.
闭合回路上有感应电动势, U a - U b < 0 ;
【判断题】滴定分析中,解离常数K越大,反应越完全,则滴定突越范围越宽,结果越准确。
【单选题】如图所示,条形磁铁置于水平桌面上,电磁铁的右端固定,当电磁铁电路中滑动变阻器滑片向右移动时,条形磁铁仍保持静止,在此过程中,条形磁铁受到的摩擦力的方向和大小是 [ ]
【判断题】In "A Little Cloud", little Chandler's wistful sadness in his poetry is the essence of "Celtic Literature".
【单选题】During Ezra Pound’s later period, his poetry is more concerned about ________.( )
A.
the problems of the ancient culture
B.
the contemporary cultural decay and the possible sources of cultural renewal
C.
the familiar poetic subjects of the 19th century Romanticism
D.
the familiar poetic subjects of the beginning of the 20th century