内痔病人预防便秘的措施中，无关的是（） A.每天坚持适当活动 B.多饮水、多吃蔬菜

下列关于比率量表的说法正确的有（）。

A．表中没设立绝对零点

B．可以进行四则运算

C．测量水平最高的量表

D．可以用几何平均数

E．采用的统计方法单一

Oh,Danny. It’s raining outside. You’d better ______ your raincoat.[ ]

A. put on

B. put up        

C. dress      

D. to wear

TCP/IP (71) layer protocols provide services to the application (72) running on a computer. The application layer does not define the application itself, but rather it defines
(73) that applications need — like the ability to transfer a file in the case of HTTP. In short, the application layer provides an (74) between software running on a computer and the network itself. The TCP/IP application layer includes a relatively large number of protocols, with HTTP being only one of those. The TCP/IP (75) layer consists of two main protocol options — the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP).

A. iteration B. objectC. interface D. activity

加装燃油时，应当由哪位主管轮机员负责检查装油管系和开关阀门（）。

A．大管轮

B．二管轮

C．三管轮

D．值班轮机员

刚入单位对已经解除或者终止的劳动合同的文本，至少保存3年备查。( )