The crime was not discovered till 48 hours later, （） gave the criminals plenty of time to get away. A: which B: that C: as D: what

An international tourist is defined as anyone visiting a country, other than that which is his usual place of residence, for （） hours. A: more than 48 B: more than 24 C: less than 48 D: less than 24

48 .which of the following equipments can not be used to receive Maritime Safety information. A: HF NBDP B: NAVTEX C: EGC receiver D: GPS receivers

4＝2＋2  18＝5＋13，18＝7＋11  48＝5＋43，48＝7＋41，48＝11＋37；48＝17＋31，48＝19＋29

省级投诉：平均几小时答复，最长不超过几小时？（） A: 48；48 B: 24；24 C: 24；48 D: 48；24

There are____peaks on the mountain, of which Mount Everest is 1,864 meters above sea level, together with Guangming Ding and Tiandu Peak and becoming the main peak. A: 48 B: 72 C: 24 D: 12

SART内的电池要求在待命和应答的状态下工作（） A: 48/8 B: 96/8 C: 96/48 D: 48/48

以太网的IPv4地址、IPv6地址、硬件地址的位数分别是（ ）。 A: 32、48、128 B: 48、32、128 C: 32、128、48 D: 128、48、32

已知直线AB的真方位角为48°50′15″，A点的磁偏角为δ＝－2′45″。该直线磁方位角为（）。 A: 48°53′00″ B: 48°50′15″ C: 48°47′30″ D: 48°55′45″

存储一个48×48点阵的汉字字形码需要_________字节。