DHCP服务器配置时，指定分配地址的租期为1天20小时的命令是（） A: lease day 1 hour 20 B: excluded-ip-address day 1 hour 20 C: lease 1 day 20 hour D: gateway-list 1 day 20 hour

The doctors successfully completed a 20-hour operation to __________ the one-year-old twins at the head. A: isolate B: separate C: divide D: remove

ModularP模块的每小时测试速度是（） A: 600tests/hour B: 800tests/hour C: 900tests/hour D: 1000tests/hour E: 1200tests/hour

The emplyees in that company are paid ______. A: by hours B: by hour C: by an hour D: by the hour

I’ll be with you in (). A: one quarter of an hour B: a quarter of one hour C: one quarter of hour D: a quarter of an hour

将变量hour的个位送入变量gw的语句是：（ ） A: gw= hour; B: gw=hour/10; C: gw=hour%10; D: gw== hour%10;

John will be late for the party because something happened _________. A: for one hour B: in one hour C: one hour ago D: one hour past

There are _______ buses to the airport. A: hour B: an hour C: hourly

Yesterday we had （） talk. A: Aone and a half hour’s B: Bone and a half hour C: Can hour and a half’s D: Dan hour’s and a half

--How did the boss pay the workers--As a rule, they were paid(). A: by an hour B: by the hour C: by hour D: by hours