Thediurnalpressurevariationismostnoticeableinthe().
A. polarregions
B. horselatitudes
C. roaringforties
D. doldrums
信息数字化过程中采样的作用,是把连续的模拟信号按照一定的频率进行采样,得到一系列有限的()。
A. 离散值
B. 数字
C. 模拟值
D. 量化值
Thediurnalvariationofpressureismostnoticeable().
A. abovethepolarcircles
B. inalowpressurearea
C. duringperiodsoflowtemperatures
D. inthedoldrums
Theexpansiontankforadieselengineclosedcoolingsystemisdesignedtomaintainaconstantheadonthesystemand().
A. reducewatertemperature
B. reducewaterturbulence
C. provideanaircushion
D. allowforanincreaseinwatervolumeastheenginewarmsup