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【单选题】
不能用块属性管理器进行修改的是()。A.
属性的可见性
B.
属性文字如何显示
C.
属性所在的图层和属性行的颜色、宽度及类型
D.
属性的个数
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【简答题】我国元代数学著作《四元玉鉴》的作者是( )
【单选题】The government is asked to improve school bus safety, ______ ? [ ]
A.
didn't it
B.
hasn't it
C.
isn't it
D.
doesn't it
【单选题】A “stopper” is（）.
A.
a short length of line used for temporarily holding another line
B.
a snatch block for handling a topping lift
C.
an engine order telegraph
D.
the brake on a cargo winch
【单选题】The main advantage of a Chinese stopper over the one line stopper is that it ______.
A.
will not jam on the mooring line
B.
is stronger
C.
is easier to use when under heavy tension
D.
is safer to use when under heavy tension
【单选题】The safety stopper that prevents the anchor cable from running free if the cable jumps the wildcat is the ______.
A.
riding pawl
B.
devil's claw
C.
buckler plate
D.
spill pipe
【简答题】练习 2 马克离家出走后,一家人都在焦急寻找,当凯特问邻居蒂娜,马克有没有在她家时,蒂娜对凯特说 “ I always knew one of your kids would land on a milk carton. ”请说说你对这句话的理解。
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