紧急电话亭通常布设在上、下行车道两侧的（）上。A、土路肩B、主车道C、超车道D、边坡

The "main storage" normally means that part of internal storage into which instructions and other data must be loaded for subsequent execution or processing. In large computing systems, the term "main storage" is (71) to "memory". "Buffer" mainly indicates a special-purpose storage or storage area allowing, through (72) storage, the data transfer between two functional units having different transfer characteristics. A buffer storage is used between non-synchronized devices or where one is (73) and the other is parallel or between those having different trans far rates. " (74) (memory)" is also a special-purpose buffer storage, smaller and faster than main storage, used to hold a copy of instructions and data obtained from main storage and likely to be needed next by the processor. "Register" is commonly composed of a part of internal storage having a specified storage (75) and usually intended for a specific purpose.

（73）是（）

A.sequential

B.serial

C.chain

D.successive

---- The fish soup is delicious．I’d like some more．

---- Sorry．There is ________ left．

A．none

B．neither

C．no one

D．a little

下列项目中，单价合同适用的项目是( )。

A．工程量小，结构简单、工期短、估价方便的中小型建筑工程项目

B．合同条款采用FIDIC合同条款，业主委托工程师管理的项目

C．需要立即开展工作的项目

D．项目风险很大的项目

企业购入了需要安装的设备一台，取得的发票上注明的设备款为40000元，发生的运费为2500元，购人后发生安装费1000元，全部款项已从银行存款户支付，设备已安装完毕，交付使用。

支付安装费时，会计分录为（）。

A.借：在建工程2500

贷：银行存款2500

B.借：在建工程40000

贷：银行存款40000

C.借：在建工程1000

贷：银行存款1000

D.借：在建工程43500

贷：银行存款43500

在CDMA系统中当两信号的多径时延相差大于一个（）时，这两个信号是不相关的，或者说是可分离的。我们习惯上将某一可分离的信号叫做信号的（）。