经代谢转变生成牛磺酸的氨基酸是（）。A.半胱氨酸 B.甲硫氨酸 C.苏氨酸 D.赖氨

与其他计算工具相比，计算机具有（）等特点。

A.运算速度快

B.计算精度高

C.存储容量大

D.具有逻辑判断能力

质地均匀的正四面体玩具的4个面上分别刻着数字1，2，3，4，将4个这样的玩具同时抛掷于桌面上．

（1）求与桌面接触的4个面上的4个数的乘积不能被4整除的概率；

（2）设ξ为与桌面接触的4个面上数字中偶数的个数，求ξ的分歧布列及期望Eξ．

–OAO- Relax is a company that operates a chain of hotels and leisure centres in several towns and cities throughout Russia. Last year, –OAO- Relax appointed Tamara, a new chief executive officer, who persuaded the board of directors to diversify the business by setting up a chain of health clubs. Despite scepticism in the media and opposition from some of the shareholders, Tamara proceeded with the plans.The outcome of the diversification has been a disaster. The health clubs failed to attract sufficient business to cover their costs and proved to be a drain on the company’s resources. –OAO- Relax is faced with the prospect of closing down the health clubs, or selling off this part of the business at a huge loss.A group of shareholders that collectively holds 8% of the shares in –OAO- Relax believes that the initiative has caused irreversible damage to the company. They have been backed by three of the company’s ten directors, who consistently opposed the initiative only to be outvoted by their colleagues on the board. These directors argue that their colleagues who backed Tamara’s ideas made no real effort to understand the market and simply went along with Tamara’s proposals. These directors are willing to provide documentary evidence that the decisions that were taken were based on incomplete and inaccurate information.Required:

(a) Explain the actions that the shareholders who own 8% of the shares in –OAO- Relax could take to address their concerns. (5 marks)

两纤复用段共享保护环环上最大能有（）个网元。

On a ship，a fixed carbon dioxide or other approved system must be installed（）.

A.where oil or chemical drums are stored

B.in all battery storage locations

C.in paint lockers

D.in all of the above locations