1.选择题- (共2题)
1.如图所示,一理想变压器原、副线圈的匝数比为n:1. 原线圈接正弦交变电压U,副线圈接有一个交流电流表和一个电动机. 电动机线圈电阻为R,当变压器的输入端接通电源后,电流表的示数为I,电动机带动一质量为m的重物以速度v匀速上升,则下列判断正确的是 ( )

2.如图所示,一理想变压器原、副线圈的匝数比为n:1. 原线圈接正弦交变电压U,副线圈接有一个交流电流表和一个电动机. 电动机线圈电阻为R,当变压器的输入端接通电源后,电流表的示数为I,电动机带动一质量为m的重物以速度v匀速上升,则下列判断正确的是 ( )

2.单项选择- (共6题)
3.
It’s good feeling for student’s to return to school after summer vacation.
A.a; the | B.a; a | C.a; the | D.a; / |
4.
, the young teacher is the sort of woman to spread sunshine to her students and colleagues thought her smile.
A.Sensitive and generous | B.Shy and cautions |
C.Hand wording and confident | D.Lighthearted and optimistic |
5.
I haven’t been my cousin for ages and he has changed recogn
ition.

A.beyond | B.with | C.for | D.what |
6.
The door opened and in we had never seen before.
A.did a tall man come |
B.a tall man did come |
C.came a tall man |
D.a tall man came |
7.
—Excuse me, sir. Could you help me?
—Sure ?
—Sure ?
A.What is that | B.What is it | C.What help | D.What do you want |
试卷分析
-
【1】题量占比
选择题:(2道)
单项选择:(6道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:6
7星难题:0
8星难题:0
9星难题:0