10.Whatinstrumentisbestforshowingsmallchange?（）
Adigitaldisplay.
B. Ananaloguedisplay.
C. Amixeddigital/analoguedisplay.
查看答案
11.WhatcolourshouldtheAlert'warningbeonaCRT?（）
A. Brightredandflashing.
B. SteadyRed.
C. Flashingyellow/amber.
12.SystemTolerancecanbesub-dividedinto（）
A. protectedandsemi-protectedsystems.
B. protectedandendangeredsystems.
C. protectedandvulnerablesystems.
13.AflashingredwarninglightonaCRTnormallyindicates（）
A. thereisafaultinacriticalsystem.
B. emergency.
C. alert.
14.Adangerofautomationisthat（）
A. therecanbegreaterdelaysbetweentheperformanceofthecrewanditsultimateeffect.
B. delaysbetweentheperformanceofthecrewanditsultimateeffectareshortened.
C. delaysbetweentheperformanceofthecrewanditsultimateeffectarenotappreciated.
微信支付 
支付宝支付