根据（）不同，常见的投资策略分为主动型策略与被动型策略。A. 投资决策的灵活性B. 策略适

A．8，3

B．9，9

C．8，9

D．9，3

A．2

B．4

C．6

D．7

E．8

A simple beam of length L = 5 m carries a uniform load of intensity q= 5.8 kN/m and a concentrated load 22.5 kN (see fgure). (a) Assuming= 110 MPa , calculate the required section modulus S. Then select the most economical wide-flange beam (W shape) from Table F-1(b) in Appendix F, and recalculate S, taking into account the weight of the beam. Select a new beam if necessary. (b) Repeat part (a), but now assume that the design requires that the W shape must be used in weak axis bending (i.e., it must bend about the 2–2 (or y) axis of the cross section).

下列代码的执行结果是（）。 int length="Hell0"．length； System．OUt．println(length)；

A.5

B.2

C.10

D.6

In triangle ABC, what is the length of AB？

(1) The length of BC is 5 and the length of AC is 12.

(2) Angle C=90°.

数组有没有length()这个方法 String有没有length()这个方法？

数组有没有length()这个方法？ String 有没有length()这

个方法？