直埋线路与非同沟直埋其他通信线缆最小平行净距为()。
A. 0.5m
B. 1.0m
C. 2.0m
D. 3.0m
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设银行利率为6%,按复利计算,若5年后想购买一台价格为16万元的设备,现在应存入银行()万元。
A. 10
B. 12
C. 13
D. 16
测量T·CL雷达灵敏度时,应将专用测试仪置于雷达箱前方()处并调整测试仪方位,使其对准雷达。
A. 5
B. 10
C. 15
D. 20
RYUKYU S TO SE 6 BEC 4-5.ISOL SHWRS.SEA 3 M BEC 2 M.SWELL SE 3-4M.This description is likely to be under the heading of().
A. FORECAST
B. GALE WARNING
C. SYNOPSIS
D. STORM WARNING
Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is()
A. entirely constant pressure
B. entirely constant temperature
C. a combination of constant volume and constant pressure
D. a combination of constant temperature and constant pressure