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【单选题】
下列叙述错误的是( )。A.
预编译处理命令必须放置在源程序的最前面
B.
宏定义命令中的宏名必须用大写字母表示，否则编译出错
C.
一个C源程序只允许有一条预编译处理命令
D.
宏定义命令与程序中的语句一样需要编译
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皮皮学刷刷变学霸
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【简答题】Are dockside cranes available?
【单选题】成都市持续推动“大众创业、万众创新”，深化国家________示范基地建设，高水平办好“创交会”“菁蓉汇”，营造好环境，建设大平台?
A.
创新创业
B.
绿色环保
C.
文化产业
D.
全域环境
【单选题】Some cranes are mounted in pairs on a common platform. which can be rotated through_____.
A.
360o
B.
270o
C.
180o
D.
90o
【单选题】What is/are the advantage（s）of cranes over conventional cargo booms ________．
A.
Cranes are able to pick up and drop loads over a greater spotting area
B.
Increased safety because the deck is clear of running and standing rigging
C.
Simplicity of operation of the crane by its operator
D.
All of the above
【单选题】You have to take some necessities such as ropes, a flash, boots, ______ you may get lost in the mountain if going hiking.
A.
so that
B.
in order that
C.
now that
D.
in case
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