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【简答题】
微波采用____通信方式,沿地球表面直线传播,一般只有____km左右。但若采用100m高的天线塔,则距离可增大到____km。
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【单选题】Under Port State Control (PSC), in general, ships will not be inspected within _____ of a previous inspection in an MOU Port, unless there are clear grounds for inspection.
A.
one year
B.
two months
C.
. six months
D.
one month
【单选题】选择铸型分型面时应考虑哪些原则( )。 1分型面最少;2型芯最少;3活块最少;4尽量采用平直分型面;5尽量在一个砂箱内;6只能在下箱
A.
①②③④⑥
B.
①②③④⑤
C.
①②④⑤⑥
D.
①②③④
【单选题】Under the provisions of applicable international conventions, the officers to conduct port state control inspection must be duly authorized by ______.
A.
the company
B.
the Government of the country
C.
the organization recognized by the Administration
D.
the IMO
【单选题】选择铸型分型面时应考虑哪些原则（）。①分型面最少；②型芯最少；③活块最少；④尽量采用平直分型面；⑤尽量在一个砂箱内；⑥只能在下箱
A.
① ② ④ ⑤ ⑥
B.
① ② ③ ④
C.
① ② ③ ④ ⑤
D.
① ② ③ ④ ⑥
【单选题】International Ship Security certificate, ISSC for short, will be checked during Port State Control
A.
Port State Control will issue ISSC
B.
Port State Control will update ISSC
C.
Port State Control will inspect ISSC
D.
Flag State Control will inspect ISSC
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