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【单选题】
S1:What's the security level at this port now?S2:Security level 1.S1:Then what should be done to prevent unauthorized persons from boarding the ship?S2:All access points have to be monitored continuously.S1:Do we have to check the ID of the visitors?S2:Yes, all visitors must present their ID and be logged in.S1:Do you have to secure all the restricted areas?S2:No, thete is no requirement to have the restrieted areas locked or secured. Q3:What shall the visitors do?
A.
Show their ID.
B.
Show their personal effects.
C.
Reserve in advance.
D.
Search their body.
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