It is reported that the United States uses ______ energy as the whole of Europe.

A．as twice

B．twice much

C．twice much as

D．twice as much

下列说法正确的是：（）

Ⅰ、转换手动操舵或自动操舵必须由值班驾驶员亲自或在其监督之下进行

Ⅱ、值班驾驶员应将所有与航行安全有关的指示和信息告知驾驶台的其他值班人员

Ⅲ、只要可行和情况允许，船上的航行设备应经常在海上作操作试验

A.Ⅰ、Ⅱ

B.Ⅰ、Ⅱ、Ⅲ

C.Ⅰ、Ⅲ

D.Ⅱ、Ⅲ