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6.在腐乳的制作過(guò)程中,毛霉等微生物能夠?qū)⒍垢械牡鞍踪|(zhì)分解為氨基酸,有一個(gè)有3條多肽鏈組成的蛋白質(zhì)相對(duì)分子質(zhì)量為10254,每個(gè)氨基酸的平均相對(duì)分子質(zhì)量為120,  則這個(gè)蛋白質(zhì)是由多少個(gè)氨基酸形成的?                      (   )

     A.102          B.10l           C.100          D.99

試題詳情

5.果酒的制作離不開(kāi)酵母菌,在配制酵母菌的培養(yǎng)基時(shí),常添加一定濃度的葡萄糖液,如果葡萄糖濃度過(guò)高,反而會(huì)抑制酵母菌的生長(zhǎng),其原因最可能是        (   )

   A.葡萄糖被合成了淀粉             B.酵母菌細(xì)胞失水

   C.改變了培養(yǎng)液的pH              D.酵母菌發(fā)生了變異

試題詳情

4.豆腐上長(zhǎng)出了毛霉之后,下一步要加鹽腌制,其中不屬于加鹽作用的是       (   )

   A.調(diào)味                         B.可使豆腐析出水分,使豆腐塊變硬

   C.促進(jìn)毛霉的繼續(xù)生長(zhǎng)             D.抑制微生物的生長(zhǎng),避免豆腐變質(zhì)

試題詳情

3.下列關(guān)于果酒制作過(guò)程中的敘述,正確的是                            (   )

     A.應(yīng)先去除葡萄的枝梗,再進(jìn)行沖洗,這樣洗的徹底

     B.使發(fā)酵裝置的溫度維持在20℃左右最好

     C.在發(fā)酵過(guò)程中,需從充氣口不斷通入空氣

     D.由于酵母菌的繁殖能力很強(qiáng),不需對(duì)所用的裝置進(jìn)行消毒處理

試題詳情

2.在果酒、果醋、腐乳、泡菜的制作中,用到的微生物分別是                (   )

     A.酵母菌、酵母菌、毛霉、乳酸菌   B.酵母菌、醋酸菌、毛霉、乳酸菌

     C.毛霉、醋酸菌、、乳酸菌、酵母菌    D.酵母菌、乳酸菌、毛霉、醋酸菌

試題詳情

1.交警檢驗(yàn)司機(jī)是否酒后駕車(chē)時(shí),所用的儀器中裝有                      (   )

   A.重鉻酸鉀      B.MnO2        C.斐林試劑      D.BaCL2

試題詳情

50. We have fount a hotel. Sleep for us is ________ question tonight.

We haven't found a hotel. Sleep for us is _________ question tonight.

A. out B. out of C. out of a D. out of the

Key: 1 ABDB 2. BCDC 3. CD 4. AC 5. DC 6. DC 7 DB 8 BA 9 BCA 10 CA

11 CB 12 BAA 13 ABC 14 AC 15 CD 16 AB 17 CBA 18 BAD 19 CA 20 AD

21 CA 22 Ca 23 AC 24 DA 25 CD 26 BD 27 BA 28 BA 29 BDA 30 BC

31 CB 32 CA 33 DB 34 AC 35 CA 36 DA 37 AB 38 CDD 39 AD 40 CA

41 CAB 42 DB 43 BC 44 DAB 45 AC 46 BA 47 CD 48 CB 49 CB 50 BD

試題詳情

49. I feel like _______ something different.

I would like ________ something different.

A. do B. to do C. doing D. being doing

試題詳情

48. He was very busy ________ his friend.

He was too busy ________ his friend.

A. receive B. to receive C. receiving D. with receiving

試題詳情

47. Our class is _______ Mr. Wang, our English teacher.

Mr. Wang, our English teacher, is _________ our class.

A. in charge B. in the charge C. in the charge of D. in charge of

試題詳情


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