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【单选题】
病毒被灭活后A.
失去包膜
B.
失去干扰现象
C.
失去免疫原性
D.
失去感染性
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举一反三
【多选题】下列各项中属于统计人员职责职权的是统计人员( )。
A.
应当坚持实事求是，恪守职业道德
B.
独立行使统计调查、统计报告、统计监督权力
C.
进行统计调查时，有权就与统计有关问题询问有关人员
D.
应当具备与其从事的统计工作相适应的专业知识和业务能力
E.
应当自行修改不准确的统计资料
【简答题】请计算,整流滤波电路中,估算的输入与输出电压之间的比值。
【单选题】【单选】What is the main purpose of dunnage?
A.
To act as ballast for light vessels
B.
To provide ventilation and drainage for cargo
C.
To secure the tarpaulins in place
D.
To support weakened bulkheads
【单选题】S1:Have you laid the dunnage as instructed?S2:I think so.S1:What have you done with the bilges?S2:The bilges have been covered with planks.S1:Where did you find the dunnage planks? The planks you use ...
A.
It should be laid with one layer of dunnage.
B.
It should be laid with two layer of dunnage.
C.
It should be laid with one layer of mats.
D.
It should be laid with two layer of dunnage.
【简答题】习题2.doc
【单选题】What is the main purpose of dunnage? ___ .
A.
To act as ballast for light vessels
B.
To provide ventilation and drainage for cargo
C.
To secure the tarpaulins in place
D.
To support weakened bulkheads
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