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【单选题】
硅藻土杀虫剂来源于硅藻土矿，其化学成分是二氧化硅。按中国农药毒性分级标准，硅藻土杀虫剂属()。A.
低毒杀虫剂
B.
中毒杀虫剂
C.
高毒杀虫剂
D.
无毒杀虫剂
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举一反三
【单选题】The geographic area that would maximize economic benefits by keeping the exchange rate fixed within the area is a (an):
A.
Trade union
B.
Currency board
C.
Trade bloc
D.
Optimal currency area
【简答题】Live loads consist chiefly of ___________(使用)loads in buildings and___________ (交通) loads on bridges.
【单选题】According to the text, of the following loads is dead load.
A.
Snow loads
B.
the weight of structure
C.
Wind loads
D.
the weight of the occupancy
【简答题】PLMN内跟踪区域的标识是『____』。(PLMN identity within the track area is『____』.)
【单选题】甲、乙、丙、丁四家施工单位签订共同投标协议组成联合体,以一个投标人的身份投标。关于此联合体说法正确的是( )。
A.
联合体内部的共同投标协议与招标人无关，不必交予招标人
B.
合体各方就中标项目向招标人承担连带责任
C.
合体任何成员均有权以对债务分担比例约定为由拒绝履行全部债务
D.
联合体成员之一清偿全部债务后，联合体不能免除履行义务
【单选题】According to the text, of the following loads is environmental loads.
A.
wearing suces
B.
suspended loads
C.
earthquak e l oads
D.
the weight of the occupancy
【单选题】An area within the coverage of at least, one MF shore station in which continuous DSC distressalerting is available is()excluding sea area Al.
A.
sea area Al
B.
sea area A2,
C.
distress area
D.
NAVAREA
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