排水横管与排水立管连接处应采用斜三通或顺水三通，以防堵塞。
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电话银行K令单笔转账限额为（）元。
A. 10000
B. 20000
C. 50000
D. 100000
The plunger in a jerk pump is rotated until the release port is uncoveredIf the port remains uncovered all of the time, which of the listed operations will occur?（）
A. No fuel will be delivered
B. The maximum effective stroke will be attained
C. The fuel delivered to the cylinder will be excessive
D. The injection nozzle will overheat and carbonize
为W／O型的食品是（）。
A. 牛乳
B. 淋淇淋
C. 糕点面糊
D. 人造奶油
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