活動名稱
【解題達人! We want you!】
活動說明
阿摩站上可謂臥虎藏龍，阿摩發出200萬顆鑽石號召達人們來解題!
針對一些題目可能有疑問但卻缺少討論，阿摩主動幫大家尋找最佳解!
懸賞試題多達20萬題，快看看是否有自己拿手的科目試題，一旦你的回應被選為最佳解，一題即可獲得10顆鑽石。
懸賞時間結束後，只要摩友觀看你的詳解，每次也會得到10顆鑽石喔!
關於鑽石
如何使用:
- ✔懸賞試題詳解
- ✔購買私人筆記
- ✔購買懸賞詳解
- ✔兌換VIP
(1000顆鑽石可換30天VIP) - ✔兌換現金
(50000顆鑽石可換NT$4,000)
如何獲得:
- ✔解答懸賞題目並被選為最佳解
- ✔撰寫私人筆記販售
- ✔撰寫詳解販售(必須超過10讚)
- ✔直接購買 (至站內商城選購)
** 所有鑽石收入，都會有10%的手續費用
近期考題
21.The cell metabolism is tightly connected to the regulation of gene expression. The lac operon (lactose operon)
is an example. Which statement below regarding the lac operon is correct?
(A)There are lacZ, lacY and lacA genes in lac operon and they are transcribed ind
(A)There are lacZ, lacY and lacA genes in lac operon and they are transcribed ind
(B)RNA polymerase binds to operator in the absence of lactose.
(C) The operon is controlled by negative and positive transcription factors.
(D) In the presence of lactose, the lac repressor encoded by the lacI gene is not expressed for ope
ron activation.
(E) In the presence of high concentration glucose, the catabolite activator.protein (CAP) is activated to increase Lac Zexpression.
21. 電氣設備維修時，在關掉電源後，最好停留 1 至 5 分鐘才開始檢修，其主要的理由為下列何者？
(A) 先平靜心情，做好準備才動手
(B)法規沒有規定，這完全沒有必要
(C)讓裡面的電容器有時間放電完 畢，才安全
(D)讓機器設備降溫下來再查修。
(A) 先平靜心情，做好準備才動手
(B)法規沒有規定，這完全沒有必要
(C)讓裡面的電容器有時間放電完 畢，才安全
(D)讓機器設備降溫下來再查修。
20. ______ during the economic downturn, many middle-class families received their crash course to learn the value of thrift.
(A) To force to be frugal
(B) To force being frugal
(C) Forcing to be frugal
(D) Forced to be frugal
(A) To force to be frugal
(B) To force being frugal
(C) Forcing to be frugal
(D) Forced to be frugal