关于两船间的船间作用，下述何者正确？（） Ⅰ、两船船速相差越大，两船的船间作用越大 Ⅱ、两船航向相反时，船舶所受的船间作用影响较大 Ⅲ、大小船同向航行，小船所受影响比大船所受的影响大
A. Ⅰ、Ⅱ、Ⅲ
B. Ⅱ、Ⅲ
C. Ⅲ
D. Ⅰ、Ⅱ
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母乳的特点是（）
A. 钙含量高于牛乳
B. 母乳不容易发生过敏
C. 酪蛋白/乳白蛋白比例较牛乳高
D. 牛磺酸含量较牛乳低
E. 铁的生物利用率较牛乳低
When trying to run topas on an AIX 4.3.x system， the system administrator gets the error message "ksh： topas： not found." Which of the following options is the most likely reason this occurred？（）
A. The fileset bos.perf.tools is not loaded on this system.
B. The fileset perfagent.tools is not loaded on this system.
C. The command topas is only available in AIX version 5.x.
D. The path variable does not include /usr/samples/kernel/. Either add it to the .profile or cd to that location and run the command again.
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