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【多选题】
注射剂的给药途径有哪些
A.
皮肉注射
B.
皮下注射
C.
肌肉注射
D.
静脉注射
E.
动脉内注射
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【单选题】测定下列金属污染物,水样保存时不能加酸酸化的是 。
A.
Pb2+
B.
Cd2+
C.
Cr6+
D.
Hg2+
【简答题】设当x=θ时,函数f(x)=sinx+2cosx取得最大值,则cosθ=______.
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A.
0
B.
1
C.
-1
D.
3 2
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A.
withdrawn
B.
delivered
C.
edited
D.
processed
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【单选题】Safety is dependent on orderliness and cleanlinessOrder may be maintained by .
A.
storing all items in an assigned place
B.
storing all items in a common storage container except those ready-for-sea
C.
tagging all items according to their age and then storing them together
D.
disposing of worn-out items
【简答题】设 f(2cosx-1)=1-co s 2 x(x∈[ π 3 , 2π 3 ]) ,则f(x)的值域为______.
【简答题】Among Institute Cargo Clause A,B,and C,Institute Cargo Clause(C)is the most restricted coverage and covers stranding,grounding,or sinking;derailment of land conveyance;jettison. ( )
【简答题】设当x=θ时,函数f(x)=sinx-2cosx取得最大值,则cosθ=____.
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