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【单选题】
While on watch at sea you must maintain a proper lookout at all times. On a 700-foot cargo vessel being hand-steered during daylight hours in good visibility and clear of any navigational hazards，the lookout may be ______.A.
the helmsman
B.
the mate on watch
C.
Either A or B
D.
Neither A nor B
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【简答题】①已知tanα=1， α∈(0， π 2 ) ，求 2 cos 2 α 2 -sinα-1 2 sin( π 4 +α) 的值； ②已知 θ∈(0， π 2 ) ，且sin ( π 4 +θ) = 3 2 ，求sin（ π 4 +2θ）的值．
【单选题】The key benefit of ( )is that it provides guidance and direction on how the project costs will be managed throughout the project.
A.
Plan Cost Management
B.
Control Cost
C.
Estimate Cost
D.
Determine Budget
【单选题】Def Co provides accounting services to government departments. On average, each staff member works six chargeable hours per day, with the rest of their working day being spent on non-chargeable admini...
A.
A
B.
B
C.
C
D.
D
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