梯子如需接长使用,接头只允许有一处,且连接后梯梁的强度不应低于()。
A.单梯梯梁强度的70%
B.单梯梯梁强度的80%
C.单梯梯梁强度的90%
D.单梯梯梁的强度
参考答案:D
制定灌溉制度有哪些方法?
In teaching a female client who is HIV-positive about pregnancy, the nurse would know more teaching is necessary when the client says,
A."The baby can get the virus from my placenta. "
B."I'm planning on starting on birth control pills. "
C."Not everyone who has the virus gives birth to a baby who has the virus. "
D."I'll need to have a C-section if I become pregnant and have a baby. "