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【多选题】
11b/g 协议在中国共开放 13 个信道 (1~13), 请从这 13 个信道中选择 3 个相互不干扰的信道 , 以下那组的选择是正确的 ( )A.
1,6,11
B.
1,2,3
C.
2,7,12
D.
1,5,9
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【单选题】A bottle of wine can be produced in France with 2 labor hours, and in the United States with 4 labor hours. A pound of beef can be produced in France with 1 labor hour, and in the United States with 1...
A.
France has a comparative advantage in the production of beef.
B.
France has an absolute advantage in the production of beef.
C.
The United States has an absolute, but not a comparative advantage in the production of beef.
D.
The United States has both a comparative and an absolute advantage in the production of beef.
【单选题】My mother is strict both _____ me and ____ her work.
A.
with; with
B.
with; in
C.
in; in
D.
in; with
【单选题】A bottle of wine can be produced in France with 2 labor hours, and in the United States with 4 labor hours. A pound of beef can be produced in France with 1 labor hour, and in the United States with 1...
A.
France has a comparative advantage in the production of beef.
B.
France has an absolute advantage in the production of beef.
C.
The United States has an absolute, but not a comparative advantage in the production of beef.
D.
The United States has both comparative and absolute advantage in the production of beef.
【简答题】色谱柱包括两种,分别为( )和( )。
【单选题】有关产褥期处理错误的是( )。
A.
产后2小时应在产房继续观察
B.
产后4小时内应让产妇排尿
C.
每日检查会阴伤口有无红肿、硬结及分泌物
D.
产褥中暑可不处理
E.
产褥中暑处理关键为降低病人的体温
【单选题】在大学生寝室内不允许使用大功率电器,以下全部属于大功率的电器是( )。
A.
电热管、电暖瓶、电热毯
B.
电饭煲、电风扇、台灯
C.
电暖瓶、热得快、电脑
D.
电热毯、电磁炉、饮水机
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