嫩枝扦插插穗可以贮存，硬枝扦插插穗随剪随插。

下列有关国民生产总值的说法不正确的是（）。

A.GDP的变动可能是由于价格变动，也可能是由于数量变动

B.GDP是流量而不是存量

C.家务劳动、自给自足生产等非市场活动不计入GDP中

D.家务劳动、自给自足生产等非市场活动计入GDP中

评价物业管理绩效的最重要、最基础的指标是( )。

A．基本指标

B．修正指标

C．评议指标

D．总况指标

可转换债券的缺点包括（）。

A．存在股价低迷无法转股的风险

B．不利于稳定公司股价

C．加入转股成本后的总筹资成本较高

D．股价上扬减少筹资数量

语音通信交换系统席位配置描述错误的是（）

A、区域管制A级管制席位应配置两套内话系统席位设备和一套备用内话系统席位设备

B、管制席位应配置两套内话系统席位设备和两套备用内话系统席位设备

C、技术维护席和其他非管制席根据需要配置席位设备

D、区域管制A级主任管制席应配置两套主用内话系统席位设备和一套备用内话系统席位设备

Ink-jet printer belongs to nonimpact printers in which the characters are formed by projecting particles or droplets of ink on to paper. (71) printer is also a n0nimpact printer in which the characters are produced by applying hot elements to heat-sensitive paper directly or by melting ink from a (72) on to plain paper. Electrostatic printer creates an electrostatic latent image, which is then made visible by a toner and transferred and fixed on paper. An electrostatic printer may be used in some instances as a (73) . Laser printer creates, by means of a laser beam directed on a (74) surface, a latent image which is then made visible by a toner and transferred and fixed on paper. Magnetographic printer creates, by means of magnetic heads operating on a metallic drum, a latent image which is then made visible by a toner and transferred and fixed on paper. Computer-output-microfilm (COM) printer produces on a photographic film a (75) of each page.

（74）处填（）。

A．brightness

B．photosensitive

C．emitter

D．light-sensitive