若（2x-1）8展开式的第8项的值为-8，则1+4x+6x2+4x3+x4的值为

—Which movies do you prefer, comedies or action movies?

—I ______ watch action movies ______ see comedies.

A. would rather; than    B. like; better                 C. prefer; to

毛细管电泳紫外检测器质量检测极限为（）

A.10－10～10－12

B.10－13～10－16

C.10－14～10－17

D.10－15～10－18

E.10－16～10－19

男，58岁，糖尿病10年，出现下列并发症。哪种为糖尿病所特有（）。

A.高血脂

B.冠心病

C.脑梗死

D.肾小球毛细血管间硬化症

E.下肢坏疽

An analyst does research about correlations and gathered information about three economic variables. He noted that whenever variable X increased by one unit, variable Y increased by 0.5 units but variable Z decreased by 0.5 units. The correlation between variables X and Y and the correlation between-variables X and Z, respectively, are closest to:()

A.A

B.B

C.C

操作IMT时出现IMT-NOWOW信息的处理措施正确的是

A、检查PSEU是否有电

B、更换PSEU

C、更换IAC

D、ABC都对。