4.作主語(yǔ)或賓語(yǔ): the+adj表示某一類人或事物, 這種名詞化的形容詞起著名詞的作用, 在句中可以作主語(yǔ)或賓語(yǔ)
a. We should respect the old and love the young.
b. The new will replace the old.
c. The rich and the poor live in separate sections in London.
3.作補(bǔ)語(yǔ)(賓語(yǔ)補(bǔ)足語(yǔ)或主語(yǔ)補(bǔ)足語(yǔ)):
a. The news made her happy.
b. We found the text very difficult.
c. You should keep your classroom clean.
d. The classroom should be kept clean.
2.作表語(yǔ):
a. The bridge is long and wide.
b. It is getting warm.
1.作定語(yǔ):
a. He is a great writer.
b. This is an interesting book.
c. I have something important to tell you.
8.如圖所示,L是電感足夠大的線圈,其直流電阻可忽略不計(jì),D1和D2是兩個(gè)相同的燈泡,若將電鍵S閉合,等燈泡亮度穩(wěn)定后,再斷開(kāi)電鍵S,則 ( )
A.電鍵S閉合時(shí),燈泡D1、D2同時(shí)亮,然后D1會(huì)變暗直到不亮,D2更亮
B.電鍵S閉合時(shí),燈泡D1很亮,D2逐漸變亮,最后一樣亮
C.電鍵S斷開(kāi)時(shí),燈泡D2隨之熄滅,而D1會(huì)亮一下后才熄滅
D.電鍵S斷開(kāi)時(shí),燈泡D1隨之熄滅,而D2會(huì)更亮后一下才熄滅
7.如圖所示電路中,A1、A2是兩只相同的電流表,電感線圈L的直流電阻與電阻R阻值相等.下面判斷正確的是 ( )
A.開(kāi)關(guān)S接通的瞬間,電流表A1的讀數(shù)大于A2的讀數(shù)
B.開(kāi)關(guān)S接通的瞬間,電流表A1的讀數(shù)小于A2的讀數(shù)
C.開(kāi)關(guān)S接通電路穩(wěn)定后再斷開(kāi)的瞬間,電流表A1的讀數(shù)大于A2的讀數(shù)
D.開(kāi)關(guān)S接通電路穩(wěn)定后再斷開(kāi)的瞬間,電流表A1數(shù)等于A2的讀數(shù)
6.如圖所示的電路中,燈泡A1、A2的規(guī)格完全相同,自感線圈L的電阻可以忽略,下列說(shuō)法中正確的是 ( )
A.當(dāng)接通電路時(shí),A2先亮,A1后亮,最后A2比A1亮
B.當(dāng)接通電路時(shí),A1和A2始終一樣亮
C.當(dāng)斷開(kāi)電路時(shí),A1和A2都過(guò)一會(huì)兒熄滅
D.當(dāng)斷開(kāi)電路時(shí),A2立即熄滅,A1過(guò)一會(huì)兒熄滅
5.如圖所示是一演示實(shí)驗(yàn)的電路圖。圖中L是一帶鐵芯的線圈,A是一燈泡。起初,開(kāi)關(guān)處于閉合狀態(tài),電路是接通的,F(xiàn)將開(kāi)關(guān)斷開(kāi),則在開(kāi)關(guān)斷開(kāi)的瞬間,通過(guò)燈泡A的電流方向是從_____端經(jīng)燈泡到_____端.這個(gè)實(shí)驗(yàn)是用來(lái)演示_____現(xiàn)象的。
4.如圖所示,L為一個(gè)自感系數(shù)大的自感線圈,開(kāi)關(guān)閉合后,小燈能正常發(fā)光,那么閉合開(kāi)關(guān)和斷開(kāi)開(kāi)關(guān)的瞬間,能觀察到的現(xiàn)象分別是 ( )
A.小燈逐漸變亮,小燈立即熄滅
B.小燈立即亮,小燈立即熄滅
C.小燈逐漸變亮,小燈比原來(lái)更亮一下再慢慢熄滅
D.小燈立即亮,小燈比原來(lái)更亮一下再慢慢熄滅
3.磁通量的單位是_____,磁感強(qiáng)度的單位是_____,自感系數(shù)的單位是_____。
百度致信 - 練習(xí)冊(cè)列表 - 試題列表
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺(tái) | 網(wǎng)上有害信息舉報(bào)專區(qū) | 電信詐騙舉報(bào)專區(qū) | 涉歷史虛無(wú)主義有害信息舉報(bào)專區(qū) | 涉企侵權(quán)舉報(bào)專區(qū)
違法和不良信息舉報(bào)電話:027-86699610 舉報(bào)郵箱:58377363@163.com