300×104kW及以上系统其允许频率偏差不超过（）。
A.±0.1HZ
B.±0.2HZ
C.±0.4HZ
D.±0.6HZ
参考答案：B
来源于间叶组织的恶性肿瘤是
A．癌B．肉瘤C．母细胞瘤D．精原细胞瘤E．霍奇金病
How much is average per-share earnings for the year as expected by the analysts().
A.＄1.14
B.＄1.17
C.＄4.65
D.＄4.67
