根据《中华人民共和国劳动法》的规定,用人单位应当保证劳动者()。
A. 每周休息半天
B. 每月休息两日
C. 每周至少休息一日
D. 每月至少休息一日
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离心泵主要性能参数包括流量,扬程,功率,效率等。
A. 正确
B. 错误
Which statement best describes OSPF external LSAs (type 5)?()
A. OSPF external LSAs are automatically flooded into all OSPF areas, unlike type 7 LSAs, which require that redistribution be configured.
B. External LSAs (type 5) are automatically changed to type 1 LSAs at ASBRs.
C. Type 5 LSAs are route summaries describing routes to networks outside the OSPF Autonomous System.
D. External network LSAs (type 5) redistributed from other routing protocols into OSPF are not permitted to flood into a stub area.
国内短波广播的波段大致为()。
A. 535kHz~1605kHz
B. 2MHz~24MHz
C. 88MHz~108MHz
世界稻谷种植面积居前两位的国家分别是()
A. 中国
B. 印度
C. 美国
D. 澳大利亚