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【简答题】
如图，抛物线 第一象限部分上的一系列点 与y正半轴上的点 及原点，构成一系列正三角形 （记 为O）,记 。 （1）求 的值；（2）求数列 的通项公式 ； （3）求证：
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皮皮学刷刷变学霸
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【简答题】should be noted that uncertainty is 5) __________.
【单选题】If you want to fix in your mind what you've noted, you should ______.
A.
review it as much as possible
B.
review it for 5 minutes 'after class
C.
review it for 30 minutes every week
D.
review it for 30 minutes at least once a week
【单选题】During the watch keeping at sea, routine adjustments should be ____.
A.
made and noted as required by the duty engineer
B.
reported to chief engineer immediately after being made by duty engineer
C.
never made before getting permission from chief engineer
D.
made as required but not logged
【多选题】关于日常使用的干电池说法正确的有
A.
使用时需要识别区分正、负极
B.
要根据电压选择使用电池
C.
不同型号的干电池，提供电能是相同的
D.
要根据使用场合，选择适合电池外形尺寸
【简答题】What should be noted in the interpreting?
【多选题】关于日常使用的干电池说法正确的有
A.
用时需要识别区分正负极
B.
根据电压选择使用电池
C.
同型号的干电池，提供电能是相同的
D.
根据使用场合，选择适合的电池外形尺寸
【单选题】It should be noted ______ the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers, or any vessels car...
A.
that
B.
which
C.
who
D.
These
【单选题】What should be noted down in interpreting?
A.
Numbers
B.
Lists
C.
Links
D.
All of the above
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